diff --git a/.cron.yml b/.cron.yml
index ef3ac8caee7f..52459c5543ef 100644
--- a/.cron.yml
+++ b/.cron.yml
@@ -122,6 +122,7 @@ jobs:
           - mozilla-beta
           - mozilla-release
           - mozilla-esr91
+          - mozilla-esr102
           - elm
       # For all non m-c jobs we just run once daily matching the 10 UTC
       # nightly which is designed to align with searchfox's AWS cron
@@ -221,6 +222,7 @@ jobs:
           - mozilla-beta
           - mozilla-release
           - mozilla-esr91
+          - mozilla-esr102
       when:
           - {weekday: 'Monday', hour: 8, minute: 0}
           - {weekday: 'Thursday', hour: 8, minute: 0}
diff --git a/python/mozbuild/mozbuild/artifacts.py b/python/mozbuild/mozbuild/artifacts.py
index 32c052e0653d..a35a46efc906 100644
--- a/python/mozbuild/mozbuild/artifacts.py
+++ b/python/mozbuild/mozbuild/artifacts.py
@@ -104,6 +104,7 @@ class ArtifactJob(object):
     # The list below list should be updated when we have new ESRs.
     esr_candidate_trees = [
         "releases/mozilla-esr91",
+        "releases/mozilla-esr102",
     ]
     try_tree = "try"
 
diff --git a/taskcluster/ci/build/linux.yml b/taskcluster/ci/build/linux.yml
index 498dbd92b6e5..3051da9d1b65 100644
--- a/taskcluster/ci/build/linux.yml
+++ b/taskcluster/ci/build/linux.yml
@@ -566,7 +566,7 @@ linux/opt:
         secrets: true
         tooltool-downloads: public
         need-xvfb: true
-    run-on-projects: ['mozilla-beta', 'mozilla-release', 'mozilla-esr91']
+    run-on-projects: ['mozilla-beta', 'mozilla-release', 'mozilla-esr91', 'mozilla-esr102']
     use-sccache: true
     fetches:
         toolchain:
diff --git a/taskcluster/ci/build/windows-mingw.yml b/taskcluster/ci/build/windows-mingw.yml
index 87657cd129f7..d9f7cb65c4ef 100644
--- a/taskcluster/ci/build/windows-mingw.yml
+++ b/taskcluster/ci/build/windows-mingw.yml
@@ -34,7 +34,7 @@ win32-mingwclang/opt:
             - builds/releng_base_windows_32_mingw_builds.py
             - builds/releng_sub_windows_configs/32_mingwclang.py
         mozconfig-variant: mingwclang
-    run-on-projects: ['mozilla-central', 'mozilla-esr91']
+    run-on-projects: ['mozilla-central', 'mozilla-esr91', 'mozilla-esr102']
     use-sccache: true
     fetches:
         toolchain:
@@ -71,7 +71,7 @@ win32-mingwclang/debug:
             - builds/releng_base_windows_32_mingw_builds.py
             - builds/releng_sub_windows_configs/32_mingwclang.py
         mozconfig-variant: mingwclang-debug
-    run-on-projects: ['mozilla-central', 'mozilla-esr91']
+    run-on-projects: ['mozilla-central', 'mozilla-esr91', 'mozilla-esr102']
     use-sccache: true
     fetches:
         toolchain:
@@ -108,7 +108,7 @@ win64-mingwclang/opt:
             - builds/releng_base_windows_64_mingw_builds.py
             - builds/releng_sub_windows_configs/64_mingwclang.py
         mozconfig-variant: mingwclang
-    run-on-projects: ['mozilla-central', 'mozilla-esr91']
+    run-on-projects: ['mozilla-central', 'mozilla-esr91', 'mozilla-esr102']
     use-sccache: true
     fetches:
         toolchain:
@@ -145,7 +145,7 @@ win64-mingwclang/debug:
             - builds/releng_base_windows_64_mingw_builds.py
             - builds/releng_sub_windows_configs/64_mingwclang.py
         mozconfig-variant: mingwclang-debug
-    run-on-projects: ['mozilla-central', 'mozilla-esr91']
+    run-on-projects: ['mozilla-central', 'mozilla-esr91', 'mozilla-esr102']
     use-sccache: true
     fetches:
         toolchain:
diff --git a/taskcluster/ci/config.yml b/taskcluster/ci/config.yml
index 1d70812ec121..5cebee2b011b 100644
--- a/taskcluster/ci/config.yml
+++ b/taskcluster/ci/config.yml
@@ -365,6 +365,18 @@ merge-automation:
             from-branch: 'release'
             to-repo: 'https://hg.mozilla.org/releases/mozilla-esr91'
             to-branch: 'esr91'
+        release-to-esr102:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "browser/config/version_display.txt"
+                  new-suffix: 'esr'
+            replacements: []
+            merge-old-head: false
+            base-tag: "FIREFOX_ESR_{major_version}_BASE"
+            from-repo: 'https://hg.mozilla.org/releases/mozilla-release'
+            from-branch: 'release'
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-esr102'
+            to-branch: 'esr102'
         bump-central:
             fetch-version-from: "browser/config/version.txt"
             version-files:
@@ -401,6 +413,19 @@ merge-automation:
             merge-old-head: false
             to-repo: 'https://hg.mozilla.org/releases/mozilla-esr91'
             to-branch: 'esr91'
+        bump-esr102:
+            fetch-version-from: "browser/config/version.txt"
+            version-files:
+                - filename: "config/milestone.txt"
+                  version-bump: "minor"
+                - filename: "browser/config/version.txt"
+                  version-bump: "minor"
+                - filename: "browser/config/version_display.txt"
+                  version-bump: "minor"
+            replacements: []
+            merge-old-head: false
+            to-repo: 'https://hg.mozilla.org/releases/mozilla-esr102'
+            to-branch: 'esr102'
 
 scriptworker:
     # See additional configuration in taskcluster/gecko_taskgraph/util/scriptworker.py
diff --git a/taskcluster/ci/cron-bouncer-check/kind.yml b/taskcluster/ci/cron-bouncer-check/kind.yml
index 847bd1d1a40e..aa1175890d44 100644
--- a/taskcluster/ci/cron-bouncer-check/kind.yml
+++ b/taskcluster/ci/cron-bouncer-check/kind.yml
@@ -54,6 +54,7 @@ jobs:
                     mozilla-beta: LATEST_FIREFOX_RELEASED_DEVEL_VERSION
                     mozilla-release: LATEST_FIREFOX_VERSION
                     mozilla-esr91: FIREFOX_ESR
+                    mozilla-esr102: FIREFOX_ESR_NEXT
                     default: LATEST_FIREFOX_DEVEL_VERSION
             products-url: https://product-details.mozilla.org/1.0/firefox_versions.json
         treeherder:
diff --git a/taskcluster/ci/release-balrog-scheduling/kind.yml b/taskcluster/ci/release-balrog-scheduling/kind.yml
index 5152afa9ab72..d41b10d67a5c 100644
--- a/taskcluster/ci/release-balrog-scheduling/kind.yml
+++ b/taskcluster/ci/release-balrog-scheduling/kind.yml
@@ -36,12 +36,14 @@ jobs:
                             beta: [32]
                             release: [145]
                             esr91: [17638]
+                            esr102: [17770]
                             default: []
                     staging:
                         by-release-type:
                             beta: [32]
                             release: [145]
                             esr91: [889]
+                            esr102: [902]
                             default: []
             background-rate:
                 by-release-type:
diff --git a/taskcluster/ci/release-balrog-submit-toplevel/kind.yml b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
index a042894825d0..4b7ccb85741c 100644
--- a/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
+++ b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
@@ -47,6 +47,7 @@ jobs:
                     beta: ["firefox-beta-cdntest", "firefox-beta-localtest"]
                     release(-rc)?: ["firefox-release-cdntest", "firefox-release-localtest"]
                     esr91: ["firefox-esr91-cdntest", "firefox-esr91-localtest"]
+                    esr102: ["firefox-esr102-cdntest", "firefox-esr102-localtest"]
                     default: []
             platforms: ["linux", "linux64", "macosx64", "win32", "win64", "win64-aarch64"]
         treeherder:
diff --git a/taskcluster/ci/release-bouncer-aliases/kind.yml b/taskcluster/ci/release-bouncer-aliases/kind.yml
index c2c1d04f601f..997a78a60314 100644
--- a/taskcluster/ci/release-bouncer-aliases/kind.yml
+++ b/taskcluster/ci/release-bouncer-aliases/kind.yml
@@ -69,6 +69,7 @@ jobs:
                     firefox-esr-latest: installer
                     firefox-esr-msi-latest-ssl: msi
                     firefox-esr-pkg-latest-ssl: pkg
+                mozilla-esr102:
                     # ... these point to the newer branch
                     firefox-esr-next-latest-ssl: installer-ssl
                     firefox-esr-next-latest: installer
diff --git a/taskcluster/ci/release-bouncer-sub/kind.yml b/taskcluster/ci/release-bouncer-sub/kind.yml
index 7155e889f436..614fad048214 100644
--- a/taskcluster/ci/release-bouncer-sub/kind.yml
+++ b/taskcluster/ci/release-bouncer-sub/kind.yml
@@ -44,6 +44,7 @@ jobs:
             by-release-type:
                 default: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'stub-installer', 'msi', 'msix', 'pkg']
                 esr91: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'msi', 'pkg']
+                esr102: ['complete-mar', 'installer', 'installer-ssl', 'partial-mar', 'msi', 'msix', 'pkg']
         shipping-product: firefox
         treeherder:
             platform: firefox-release/opt
diff --git a/taskcluster/ci/release-update-verify-config-next/kind.yml b/taskcluster/ci/release-update-verify-config-next/kind.yml
index f68b4bfbb46b..6e2e318f3719 100644
--- a/taskcluster/ci/release-update-verify-config-next/kind.yml
+++ b/taskcluster/ci/release-update-verify-config-next/kind.yml
@@ -13,7 +13,7 @@ transforms:
 job-defaults:
     name: update-verify-config-next
     run-on-projects: []  # to make sure this never runs as part of CI
-    run-on-releases: [esr91]
+    run-on-releases: [esr102]
     shipping-phase: promote
     worker-type: b-linux
     worker:
@@ -52,7 +52,7 @@ job-defaults:
         updater-platform: linux-x86_64
         product: firefox
         channel: "esr-localtest-next"
-        include-version: esr91-next
+        include-version: esr102-next
         last-watershed: "68.0esr"
 
 jobs:
diff --git a/taskcluster/ci/release-update-verify-config/kind.yml b/taskcluster/ci/release-update-verify-config/kind.yml
index ad9f1516d41d..6bc7a0fbeb5d 100644
--- a/taskcluster/ci/release-update-verify-config/kind.yml
+++ b/taskcluster/ci/release-update-verify-config/kind.yml
@@ -54,6 +54,7 @@ job-defaults:
                 beta: "72.0"
                 release(-rc)?: "72.0.2"
                 esr91: "68.0esr"
+                esr102: "102.0esr"
                 default: "default"
 
 jobs:
diff --git a/taskcluster/ci/release-update-verify-next/kind.yml b/taskcluster/ci/release-update-verify-next/kind.yml
index 721c78d089f1..60caa4647a8e 100644
--- a/taskcluster/ci/release-update-verify-next/kind.yml
+++ b/taskcluster/ci/release-update-verify-next/kind.yml
@@ -20,7 +20,7 @@ transforms:
 job-defaults:
     name: update-verify-next
     run-on-projects: []  # to make sure this never runs as part of CI
-    run-on-releases: [esr91]
+    run-on-releases: [esr102]
     shipping-phase: promote
     worker-type: b-linux
     worker:
diff --git a/taskcluster/docs/attributes.rst b/taskcluster/docs/attributes.rst
index 12962f6cd7dd..304dc9ec4c91 100644
--- a/taskcluster/docs/attributes.rst
+++ b/taskcluster/docs/attributes.rst
@@ -46,6 +46,7 @@ Project names are the repositories.  They can be:
 * `mozilla-beta`
 * `mozilla-release`
 * `mozilla-esr91`
+* `mozilla-esr102`
 * ... A partial list can be found in taskcluster/gecko_taskgraph/util/attributes.py
 
 For try, this attribute applies only if ``-p all`` is specified.  All jobs can
diff --git a/taskcluster/docs/parameters.rst b/taskcluster/docs/parameters.rst
index 29d5b09100ad..d0b0f958d0bf 100644
--- a/taskcluster/docs/parameters.rst
+++ b/taskcluster/docs/parameters.rst
@@ -179,7 +179,7 @@ Release Promotion
    Specify the next version for version bump tasks.
 
 ``release_type``
-   The type of release being promoted. One of "nightly", "beta", "esr91", "release-rc", or "release".
+   The type of release being promoted. One of "nightly", "beta", "esr91", "esr102", "release-rc", or "release".
 
 ``release_eta``
    The time and date when a release is scheduled to live. This value is passed to Balrog.
diff --git a/taskcluster/gecko_taskgraph/decision.py b/taskcluster/gecko_taskgraph/decision.py
index d38483611cc3..ad53d0c11e74 100644
--- a/taskcluster/gecko_taskgraph/decision.py
+++ b/taskcluster/gecko_taskgraph/decision.py
@@ -83,6 +83,10 @@ PER_PROJECT_PARAMETERS = {
         "target_tasks_method": "mozilla_esr91_tasks",
         "release_type": "esr91",
     },
+    "mozilla-esr102": {
+        "target_tasks_method": "mozilla_esr102_tasks",
+        "release_type": "esr102",
+    },
     "pine": {
         "target_tasks_method": "pine_tasks",
     },
diff --git a/taskcluster/gecko_taskgraph/target_tasks.py b/taskcluster/gecko_taskgraph/target_tasks.py
index 369c9b55a8af..2e0049cfce45 100644
--- a/taskcluster/gecko_taskgraph/target_tasks.py
+++ b/taskcluster/gecko_taskgraph/target_tasks.py
@@ -559,6 +559,30 @@ def target_tasks_mozilla_esr91(full_task_graph, parameters, graph_config):
     return [l for l, t in full_task_graph.tasks.items() if filter(t)]
 
 
+@_target_task("mozilla_esr102_tasks")
+def target_tasks_mozilla_esr102(full_task_graph, parameters, graph_config):
+    """Select the set of tasks required for a promotable beta or release build
+    of desktop, without android CI. The candidates build process involves a pipeline
+    of builds and signing, but does not include beetmover or balrog jobs."""
+
+    def filter(task):
+        if not filter_release_tasks(task, parameters):
+            return False
+
+        if not standard_filter(task, parameters):
+            return False
+
+        platform = task.attributes.get("build_platform")
+
+        # Android is not built on esr102.
+        if platform and "android" in platform:
+            return False
+
+        return True
+
+    return [l for l, t in full_task_graph.tasks.items() if filter(t)]
+
+
 @_target_task("promote_desktop")
 def target_tasks_promote_desktop(full_task_graph, parameters, graph_config):
     """Select the superset of tasks required to promote a beta or release build
@@ -1081,6 +1105,7 @@ def target_tasks_release_simulation(full_task_graph, parameters, graph_config):
         "beta": "mozilla-beta",
         "release": "mozilla-release",
         "esr91": "mozilla-esr91",
+        "esr102": "mozilla-esr102",
     }
     target_project = project_by_release.get(parameters["release_type"])
     if target_project is None:
diff --git a/taskcluster/gecko_taskgraph/transforms/update_verify_config.py b/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
index d81520eee5dc..4f41c0626b6a 100644
--- a/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
+++ b/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
@@ -29,8 +29,8 @@ INCLUDE_VERSION_REGEXES = {
     "nonbeta": r"'^\d+\.\d+(\.\d+)?$'",
     # Same as nonbeta, except for the esr suffix
     "esr": r"'^\d+\.\d+(\.\d+)?esr$'",
-    # Previous esr versions, for update testing before we update users to esr91
-    "esr91-next": r"'^(52|60|68|78)+\.\d+(\.\d+)?esr$'",
+    # Previous esr versions, for update testing before we update users to esr102
+    "esr102-next": r"'^(52|60|68|78|91)+\.\d+(\.\d+)?esr$'",
     # Previous Thunderbird major versions. Same idea as esrXX-next, no esr suffix
     "thunderbird91-next": r"'^78\.\d+(\.\d+)?$'",
 }
diff --git a/taskcluster/gecko_taskgraph/util/attributes.py b/taskcluster/gecko_taskgraph/util/attributes.py
index d08328b111ae..dd168bef8f84 100644
--- a/taskcluster/gecko_taskgraph/util/attributes.py
+++ b/taskcluster/gecko_taskgraph/util/attributes.py
@@ -17,6 +17,7 @@ RELEASE_PROJECTS = {
     "mozilla-beta",
     "mozilla-release",
     "mozilla-esr91",
+    "mozilla-esr102",
     "comm-central",
     "comm-beta",
     "comm-esr91",
diff --git a/taskcluster/gecko_taskgraph/util/scriptworker.py b/taskcluster/gecko_taskgraph/util/scriptworker.py
index c624ab7e0701..22a32644c701 100644
--- a/taskcluster/gecko_taskgraph/util/scriptworker.py
+++ b/taskcluster/gecko_taskgraph/util/scriptworker.py
@@ -61,6 +61,7 @@ SIGNING_SCOPE_ALIAS_TO_PROJECT = [
             "mozilla-beta",
             "mozilla-release",
             "mozilla-esr91",
+            "mozilla-esr102",
             "comm-beta",
             "comm-esr91",
         },
@@ -106,6 +107,7 @@ BEETMOVER_SCOPE_ALIAS_TO_PROJECT = [
             "mozilla-beta",
             "mozilla-release",
             "mozilla-esr91",
+            "mozilla-esr102",
             "comm-beta",
             "comm-esr91",
         },
@@ -171,6 +173,12 @@ BALROG_SCOPE_ALIAS_TO_PROJECT = [
             "mozilla-esr91",
         },
     ],
+    [
+        "esr102",
+        {
+            "mozilla-esr102",
+        },
+    ],
 ]
 
 """Map the balrog scope aliases to the actual scopes.
@@ -181,6 +189,7 @@ BALROG_SERVER_SCOPES = {
     "beta": "balrog:server:beta",
     "release": "balrog:server:release",
     "esr91": "balrog:server:esr",
+    "esr102": "balrog:server:esr",
     "default": "balrog:server:dep",
 }
 
diff --git a/testing/web-platform/manifestdownload.py b/testing/web-platform/manifestdownload.py
index c834658430d7..28ade0ef7e71 100644
--- a/testing/web-platform/manifestdownload.py
+++ b/testing/web-platform/manifestdownload.py
@@ -93,6 +93,7 @@ def taskcluster_url(logger, commits):
         "mozilla-central": "mozilla-central",
         "integration/autoland": "autoland",
         "releases/mozilla-esr91": "mozilla-esr91",
+        "releases/mozilla-esr102": "mozilla-esr102",
     }
     cset_url = (
         "https://hg.mozilla.org/{repo}/json-pushes?"