diff --git a/.cron.yml b/.cron.yml
index bc671fccb083..32f3044e877e 100644
--- a/.cron.yml
+++ b/.cron.yml
@@ -131,7 +131,6 @@ jobs:
       run-on-projects:
           - mozilla-beta
           - mozilla-release
-          - mozilla-esr102
           - mozilla-esr115
           - elm
       # For all non m-c jobs we just run once daily matching the 10 UTC
@@ -231,7 +230,6 @@ jobs:
           - mozilla-central
           - mozilla-beta
           - mozilla-release
-          - mozilla-esr102
           - mozilla-esr115
       when:
           - {weekday: 'Monday', hour: 8, minute: 0}
diff --git a/python/mozbuild/mozbuild/artifacts.py b/python/mozbuild/mozbuild/artifacts.py
index b794ecdc500c..0051f5e84f45 100644
--- a/python/mozbuild/mozbuild/artifacts.py
+++ b/python/mozbuild/mozbuild/artifacts.py
@@ -100,7 +100,6 @@ class ArtifactJob(object):
     ]
     # The list below list should be updated when we have new ESRs.
     esr_candidate_trees = [
-        "releases/mozilla-esr102",
         "releases/mozilla-esr115",
     ]
     try_tree = "try"
@@ -842,7 +841,6 @@ class ThunderbirdMixin(object):
     ]
     # The list below list should be updated when we have new ESRs.
     esr_candidate_trees = [
-        "releases/comm-esr102",
         "releases/comm-esr115",
     ]
 
diff --git a/taskcluster/ci/build/linux.yml b/taskcluster/ci/build/linux.yml
index e70f7cdafb29..2ea57e168f88 100644
--- a/taskcluster/ci/build/linux.yml
+++ b/taskcluster/ci/build/linux.yml
@@ -500,7 +500,6 @@ linux/opt:
     run-on-projects:
         - 'mozilla-beta'
         - 'mozilla-release'
-        - 'mozilla-esr102'
         - 'mozilla-esr115'
     use-sccache: true
     fetches:
diff --git a/taskcluster/ci/build/windows-mingw.yml b/taskcluster/ci/build/windows-mingw.yml
index 4927499e1fa6..be133f50bac3 100644
--- a/taskcluster/ci/build/windows-mingw.yml
+++ b/taskcluster/ci/build/windows-mingw.yml
@@ -34,7 +34,6 @@ win32-mingwclang/opt:
         mozconfig-variant: mingwclang
     run-on-projects:
         - 'mozilla-central'
-        - 'mozilla-esr102'
         - 'mozilla-esr115'
     use-sccache: true
     fetches:
@@ -74,7 +73,6 @@ win32-mingwclang/debug:
         mozconfig-variant: mingwclang-debug
     run-on-projects:
         - 'mozilla-central'
-        - 'mozilla-esr102'
         - 'mozilla-esr115'
     use-sccache: true
     fetches:
@@ -114,7 +112,6 @@ win64-mingwclang/opt:
         mozconfig-variant: mingwclang
     run-on-projects:
         - 'mozilla-central'
-        - 'mozilla-esr102'
         - 'mozilla-esr115'
     use-sccache: true
     fetches:
@@ -154,7 +151,6 @@ win64-mingwclang/debug:
         mozconfig-variant: mingwclang-debug
     run-on-projects:
         - 'mozilla-central'
-        - 'mozilla-esr102'
         - 'mozilla-esr115'
     use-sccache: true
     fetches:
diff --git a/taskcluster/ci/config.yml b/taskcluster/ci/config.yml
index 9bfffb016c4e..1fc54b124b9b 100644
--- a/taskcluster/ci/config.yml
+++ b/taskcluster/ci/config.yml
@@ -408,19 +408,6 @@ merge-automation:
             end-tag: 'FIREFOX_NIGHTLY_{major_version}_END'
             to-repo: 'https://hg.mozilla.org/mozilla-central'
             to-branch: 'central'
-        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'
         bump-esr115:
             fetch-version-from: "browser/config/version.txt"
             version-files:
diff --git a/taskcluster/ci/release-balrog-scheduling/kind.yml b/taskcluster/ci/release-balrog-scheduling/kind.yml
index 2533818ca26c..64bd751ca319 100644
--- a/taskcluster/ci/release-balrog-scheduling/kind.yml
+++ b/taskcluster/ci/release-balrog-scheduling/kind.yml
@@ -34,14 +34,12 @@ jobs:
                         by-release-type:
                             beta: [32]
                             release: [145]
-                            esr102: [17770]
                             esr115: [17824]
                             default: []
                     staging:
                         by-release-type:
                             beta: [32]
                             release: [145]
-                            esr102: [902]
                             esr115: [909]
                             default: []
             background-rate:
diff --git a/taskcluster/ci/release-balrog-submit-toplevel/kind.yml b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
index b8997e90d23b..dc1155df9d56 100644
--- a/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
+++ b/taskcluster/ci/release-balrog-submit-toplevel/kind.yml
@@ -46,7 +46,6 @@ jobs:
                 by-release-type:
                     beta: ["firefox-beta-cdntest", "firefox-beta-localtest"]
                     release(-rc)?: ["firefox-release-cdntest", "firefox-release-localtest"]
-                    esr102: ["firefox-esr102-cdntest", "firefox-esr102-localtest"]
                     esr115: ["firefox-esr115-cdntest", "firefox-esr115-localtest"]
                     default: []
             pin-channels:
diff --git a/taskcluster/docs/attributes.rst b/taskcluster/docs/attributes.rst
index ba5e2381d833..5d187c2e9a1a 100644
--- a/taskcluster/docs/attributes.rst
+++ b/taskcluster/docs/attributes.rst
@@ -45,7 +45,7 @@ Project names are the repositories.  They can be:
 * `mozilla-central`
 * `mozilla-beta`
 * `mozilla-release`
-* `mozilla-esr102`
+* `mozilla-esr115`
 * ... 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 0e0bc9cb3e18..cb80b2280209 100644
--- a/taskcluster/docs/parameters.rst
+++ b/taskcluster/docs/parameters.rst
@@ -197,7 +197,7 @@ Release Promotion
    Specify the next version for version bump tasks.
 
 ``release_type``
-   The type of release being promoted. One of "nightly", "beta", "esr102", "esr115", "release-rc", or "release".
+   The type of release being promoted. One of "nightly", "beta", "esr115", "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 4fa05afe27f1..1e9f6999354f 100644
--- a/taskcluster/gecko_taskgraph/decision.py
+++ b/taskcluster/gecko_taskgraph/decision.py
@@ -92,10 +92,6 @@ PER_PROJECT_PARAMETERS = {
         "target_tasks_method": "mozilla_release_tasks",
         "release_type": "release",
     },
-    "mozilla-esr102": {
-        "target_tasks_method": "mozilla_esr102_tasks",
-        "release_type": "esr102",
-    },
     "mozilla-esr115": {
         "target_tasks_method": "mozilla_esr115_tasks",
         "release_type": "esr115",
diff --git a/taskcluster/gecko_taskgraph/target_tasks.py b/taskcluster/gecko_taskgraph/target_tasks.py
index 08b4e4e4ddce..b5e83d928cb0 100644
--- a/taskcluster/gecko_taskgraph/target_tasks.py
+++ b/taskcluster/gecko_taskgraph/target_tasks.py
@@ -534,30 +534,6 @@ def target_tasks_mozilla_release(full_task_graph, parameters, graph_config):
     ]
 
 
-@_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("mozilla_esr115_tasks")
 def target_tasks_mozilla_esr115(full_task_graph, parameters, graph_config):
     """Select the set of tasks required for a promotable beta or release build
@@ -1168,7 +1144,6 @@ def target_tasks_release_simulation(full_task_graph, parameters, graph_config):
         "nightly": "mozilla-central",
         "beta": "mozilla-beta",
         "release": "mozilla-release",
-        "esr102": "mozilla-esr102",
         "esr115": "mozilla-esr115",
     }
     target_project = project_by_release.get(parameters["release_type"])
diff --git a/taskcluster/gecko_taskgraph/transforms/update_verify_config.py b/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
index 1de808f82ba1..2d1cd40877b6 100644
--- a/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
+++ b/taskcluster/gecko_taskgraph/transforms/update_verify_config.py
@@ -27,7 +27,7 @@ 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 esr102
+    # Previous esr versions, for update testing before we update users to esr115
     "esr115-next": r"'^(52|60|68|78|91|102)+\.\d+(\.\d+)?esr$'",
 }
 
diff --git a/taskcluster/gecko_taskgraph/util/attributes.py b/taskcluster/gecko_taskgraph/util/attributes.py
index 7aac3448de4f..9971ff233ee7 100644
--- a/taskcluster/gecko_taskgraph/util/attributes.py
+++ b/taskcluster/gecko_taskgraph/util/attributes.py
@@ -15,11 +15,9 @@ RELEASE_PROJECTS = {
     "mozilla-central",
     "mozilla-beta",
     "mozilla-release",
-    "mozilla-esr102",
     "mozilla-esr115",
     "comm-central",
     "comm-beta",
-    "comm-esr102",
     "comm-esr115",
     # bug 1845368: pine is a permanent project branch used for testing
     # nightly updates
diff --git a/taskcluster/gecko_taskgraph/util/scriptworker.py b/taskcluster/gecko_taskgraph/util/scriptworker.py
index ca07e0926c37..28c0537174da 100644
--- a/taskcluster/gecko_taskgraph/util/scriptworker.py
+++ b/taskcluster/gecko_taskgraph/util/scriptworker.py
@@ -61,10 +61,8 @@ SIGNING_SCOPE_ALIAS_TO_PROJECT = [
         {
             "mozilla-beta",
             "mozilla-release",
-            "mozilla-esr102",
             "mozilla-esr115",
             "comm-beta",
-            "comm-esr102",
             "comm-esr115",
         },
     ],
@@ -110,10 +108,8 @@ BEETMOVER_SCOPE_ALIAS_TO_PROJECT = [
         {
             "mozilla-beta",
             "mozilla-release",
-            "mozilla-esr102",
             "mozilla-esr115",
             "comm-beta",
-            "comm-esr102",
             "comm-esr115",
         },
     ],
@@ -188,16 +184,9 @@ BALROG_SCOPE_ALIAS_TO_PROJECT = [
         "release",
         {
             "mozilla-release",
-            "comm-esr102",
             "comm-esr115",
         },
     ],
-    [
-        "esr102",
-        {
-            "mozilla-esr102",
-        },
-    ],
     [
         "esr115",
         {
@@ -213,7 +202,6 @@ BALROG_SERVER_SCOPES = {
     "aurora": "balrog:server:aurora",
     "beta": "balrog:server:beta",
     "release": "balrog:server:release",
-    "esr102": "balrog:server:esr",
     "esr115": "balrog:server:esr",
     "default": "balrog:server:dep",
 }
diff --git a/testing/web-platform/manifestdownload.py b/testing/web-platform/manifestdownload.py
index 8f178061bb57..a94b2f31b46e 100644
--- a/testing/web-platform/manifestdownload.py
+++ b/testing/web-platform/manifestdownload.py
@@ -91,7 +91,6 @@ def taskcluster_url(logger, commits):
     repos = {
         "mozilla-central": "mozilla-central",
         "integration/autoland": "autoland",
-        "releases/mozilla-esr102": "mozilla-esr102",
         "releases/mozilla-esr115": "mozilla-esr115",
     }
     cset_url = (