diff --git a/OWNERS_ALIASES b/OWNERS_ALIASES
index 2f6915cfaed..78b9e5a116f 100644
--- a/OWNERS_ALIASES
+++ b/OWNERS_ALIASES
@@ -134,6 +134,9 @@ aliases:
     - ardaguclu
     - rushmash91
     - zvonkok
+  wg-api-expression-leads:
+    - JoelSpeed
+    - aaron-prindle
   wg-batch-leads:
     - kannon92
     - mwielgus
diff --git a/liaisons.md b/liaisons.md
index b435b7dd1de..e3722f2dd14 100644
--- a/liaisons.md
+++ b/liaisons.md
@@ -56,6 +56,7 @@ members will assume one of the departing members groups.
 | [SIG Windows](sig-windows/README.md) | Benjamin Elder (**[@BenTheElder](https://github.com/BenTheElder)**) |
 | [WG AI Conformance](wg-ai-conformance/README.md) | Patrick Ohly (**[@pohly](https://github.com/pohly)**) |
 | [WG AI Integration](wg-ai-integration/README.md) | Paco Xu 徐俊杰 (**[@pacoxu](https://github.com/pacoxu)**) |
+| [WG API Expression](wg-api-expression/README.md) | Benjamin Elder (**[@BenTheElder](https://github.com/BenTheElder)**) |
 | [WG Batch](wg-batch/README.md) | Antonio Ojea (**[@aojea](https://github.com/aojea)**) |
 | [WG Data Protection](wg-data-protection/README.md) | Patrick Ohly (**[@pohly](https://github.com/pohly)**) |
 | [WG Device Management](wg-device-management/README.md) | Benjamin Elder (**[@BenTheElder](https://github.com/BenTheElder)**) |
diff --git a/sig-api-machinery/README.md b/sig-api-machinery/README.md
index 2fa05b2f5d3..b805dcf0340 100644
--- a/sig-api-machinery/README.md
+++ b/sig-api-machinery/README.md
@@ -55,6 +55,7 @@ subprojects, and resolve cross-subproject technical issues and decisions.
 
 The following [working groups][working-group-definition] are sponsored by sig-api-machinery:
 * [WG AI Integration](/wg-ai-integration)
+* [WG API Expression](/wg-api-expression)
 * [WG Structured Logging](/wg-structured-logging)
 
 
diff --git a/sig-architecture/README.md b/sig-architecture/README.md
index 7a7e6b1a3f4..e705e056dcc 100644
--- a/sig-architecture/README.md
+++ b/sig-architecture/README.md
@@ -58,6 +58,7 @@ The Chairs of the SIG run operations and processes governing the SIG.
 The following [working groups][working-group-definition] are sponsored by sig-architecture:
 * [WG AI Conformance](/wg-ai-conformance)
 * [WG AI Integration](/wg-ai-integration)
+* [WG API Expression](/wg-api-expression)
 * [WG Device Management](/wg-device-management)
 * [WG LTS](/wg-lts)
 * [WG Serving](/wg-serving)
diff --git a/sig-cli/README.md b/sig-cli/README.md
index a79cad59231..0421173acf8 100644
--- a/sig-cli/README.md
+++ b/sig-cli/README.md
@@ -64,6 +64,7 @@ subprojects, and resolve cross-subproject technical issues and decisions.
 
 The following [working groups][working-group-definition] are sponsored by sig-cli:
 * [WG AI Integration](/wg-ai-integration)
+* [WG API Expression](/wg-api-expression)
 * [WG Node Lifecycle](/wg-node-lifecycle)
 
 
diff --git a/sig-list.md b/sig-list.md
index 1b92ba18e6c..9ed8dd2f950 100644
--- a/sig-list.md
+++ b/sig-list.md
@@ -63,6 +63,7 @@ When the need arises, a [new SIG can be created](sig-wg-lifecycle.md)
 |------|-------|------------------|-----------|---------|----------|
 |[AI Conformance](wg-ai-conformance/README.md)|[ai-conformance](https://github.com/kubernetes/kubernetes/labels/wg%2Fai-conformance)|* Architecture<br>* Testing<br>|* [Janet Kuo](https://github.com/janetkuo), Google<br>* [Mario Fahlandt](https://github.com/mfahlandt), Kubermatic GmbH<br>* [Rita Zhang](https://github.com/ritazh), Microsoft<br>* [Yuan Tang](https://github.com/terrytangyuan), Red Hat<br>|* [Slack](https://kubernetes.slack.com/messages/wg-ai-conformance)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-ai-conformance)|* Regular WG Meeting: [Thursdays at 10:00 PT (Pacific Time) (weekly)]()<br>
 |[AI Integration](wg-ai-integration/README.md)|[ai-integration](https://github.com/kubernetes/kubernetes/labels/wg%2Fai-integration)|* API Machinery<br>* Apps<br>* Architecture<br>* Auth<br>* CLI<br>|* [Arda Guclu](https://github.com/ardaguclu), Red Hat<br>* [Arush Sharma](https://github.com/rushmash91), Amazon<br>* [Zvonko Kaiser](https://github.com/zvonkok), NVIDIA<br>|* [Slack](https://kubernetes.slack.com/messages/wg-ai-integration)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-ai-integration)|* WG AI Integration Weekly Meeting: [Wednesdays at 9:30 PT (Pacific Time) (weekly)]()<br>
+|[API Expression](wg-api-expression/README.md)|[api-expression](https://github.com/kubernetes/kubernetes/labels/wg%2Fapi-expression)|* API Machinery<br>* Architecture<br>* CLI<br>|* [Joel Speed](https://github.com/JoelSpeed), Red Hat<br>* [Aaron Prindle](https://github.com/aaron-prindle), Google<br>|* [Slack](https://kubernetes.slack.com/messages/wg-api-expression)<br>* [Mailing List](https://groups.google.com/forum/#!forum/kubernetes-wg-api-expression)|* Regular WG Meeting: [Tuesdays at 9:30 PT (Pacific Time) (biweekly)](https://zoom.us/j/94238112084)<br>
 |[Batch](wg-batch/README.md)|[batch](https://github.com/kubernetes/kubernetes/labels/wg%2Fbatch)|* Apps<br>* Autoscaling<br>* Node<br>* Scheduling<br>|* [Kevin Hannon](https://github.com/kannon92), Red Hat<br>* [Marcin Wielgus](https://github.com/mwielgus), Google<br>* [Maciej Szulik](https://github.com/soltysh), Defense Unicorns<br>* [Swati Sehgal](https://github.com/swatisehgal), Red Hat<br>|* [Slack](https://kubernetes.slack.com/messages/wg-batch)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-batch)|* Regular Meeting ([calendar](https://calendar.google.com/calendar/embed?src=8ulop9k0jfpuo0t7kp8d9ubtj4%40group.calendar.google.com)): [Thursdays (starting February 15th 2024)s at 3PM CET (Central European Time) (monthly)](https://zoom.us/j/98329676612?pwd=c0N2bVV1aTh2VzltckdXSitaZXBKQT09)<br>
 |[Data Protection](wg-data-protection/README.md)|[data-protection](https://github.com/kubernetes/kubernetes/labels/wg%2Fdata-protection)|* Apps<br>* Storage<br>|* [Xing Yang](https://github.com/xing-yang), VMware<br>* [Xiangqian Yu](https://github.com/yuxiangqian), Google<br>|* [Slack](https://kubernetes.slack.com/messages/wg-data-protection)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-data-protection)|* Regular WG Meeting: [Wednesdays at 9:00 PT (Pacific Time) (bi-weekly)](https://zoom.us/j/6933410772)<br>
 |[Device Management](wg-device-management/README.md)|[device-management](https://github.com/kubernetes/kubernetes/labels/wg%2Fdevice-management)|* Architecture<br>* Autoscaling<br>* Network<br>* Node<br>* Scheduling<br>|* [John Belamaric](https://github.com/johnbelamaric), Google<br>* [Kevin Klues](https://github.com/klueska), NVIDIA<br>* [Patrick Ohly](https://github.com/pohly), Intel<br>|* [Slack](https://kubernetes.slack.com/messages/wg-device-management)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-device-management)|* Regular WG Meeting (Asia/Europe): [Wednesdays at 9:00 CET (Central European Time) (biweekly)](https://zoom.us/j/97238699195?pwd=cy9IMm1ZeERtRlJ3VS8yWUxHUWIrQT09)<br>* Regular WG Meeting (Europe/America): [Tuesdays at 8:30 PT (Pacific Time) (biweekly)](https://zoom.us/j/97238699195?pwd=cy9IMm1ZeERtRlJ3VS8yWUxHUWIrQT09)<br>
diff --git a/sigs.yaml b/sigs.yaml
index ad571644108..dfd38f09fe4 100644
--- a/sigs.yaml
+++ b/sigs.yaml
@@ -3608,6 +3608,43 @@ workinggroups:
     liaison:
       github: pacoxu
       name: Paco Xu 徐俊杰
+- dir: wg-api-expression
+  name: API Expression
+  mission_statement: >
+    Enable API authors to better serve API consumers, by improving and documenting
+    all aspects of Kubernetes API development.  Mission is for Kubernetes APIs to
+    be more declarative. [See full Mission Statement in Proposal](https://docs.google.com/document/d/1RxeKII-3ZESSGMKt09meSGhpDW6CyufM2v1SYgAh_uQ).
+
+  stakeholder_sigs:
+  - API Machinery
+  - Architecture
+  - CLI
+  label: api-expression
+  leadership:
+    chairs:
+    - github: JoelSpeed
+      name: Joel Speed
+      company: Red Hat
+      email: Joel.speed@hotmail.co.uk
+    - github: aaron-prindle
+      name: Aaron Prindle
+      company: Google
+      email: aprindle@google.com
+  meetings:
+  - description: Regular WG Meeting
+    day: Tuesday
+    time: "9:30"
+    tz: PT (Pacific Time)
+    frequency: biweekly
+    url: https://zoom.us/j/94238112084
+    archive_url: https://docs.google.com/document/d/1CSpNaicbEqKJoW306qaQEBIkwC1mGIcKl3yiB_C0HZk
+    recordings_url: https://www.youtube.com/playlist?list=PL69nYSiGNLP0CU9g6-yb1NgZXGAhMxfFE&jct=9Leh8O_yrRTB0Kcv3rMKZHncZq8POg
+  contact:
+    slack: wg-api-expression
+    mailing_list: https://groups.google.com/forum/#!forum/kubernetes-wg-api-expression
+    liaison:
+      github: BenTheElder
+      name: Benjamin Elder
 - dir: wg-batch
   name: Batch
   mission_statement: >
diff --git a/wg-api-expression/README.md b/wg-api-expression/README.md
new file mode 100644
index 00000000000..cb0bcd01e03
--- /dev/null
+++ b/wg-api-expression/README.md
@@ -0,0 +1,36 @@
+<!---
+This is an autogenerated file!
+
+Please do not edit this file directly, but instead make changes to the
+sigs.yaml file in the project root.
+
+To understand how this file is generated, see https://git.k8s.io/community/generator/README.md
+--->
+# API Expression Working Group
+
+Enable API authors to better serve API consumers, by improving and documenting all aspects of Kubernetes API development.  Mission is for Kubernetes APIs to be more declarative. [See full Mission Statement in Proposal](https://docs.google.com/document/d/1RxeKII-3ZESSGMKt09meSGhpDW6CyufM2v1SYgAh_uQ).
+
+## Stakeholder SIGs
+* [SIG API Machinery](/sig-api-machinery)
+* [SIG Architecture](/sig-architecture)
+* [SIG CLI](/sig-cli)
+
+## Meetings
+*Joining the [mailing list](https://groups.google.com/forum/#!forum/kubernetes-wg-api-expression) for the group will typically add invites for the following meetings to your calendar.*
+* Regular WG Meeting: [Tuesdays at 9:30 PT (Pacific Time)](https://zoom.us/j/94238112084) (biweekly). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=9%3A30&tz=PT%20%28Pacific%20Time%29).
+  * [Meeting notes and Agenda](https://docs.google.com/document/d/1CSpNaicbEqKJoW306qaQEBIkwC1mGIcKl3yiB_C0HZk).
+  * [Meeting recordings](https://www.youtube.com/playlist?list=PL69nYSiGNLP0CU9g6-yb1NgZXGAhMxfFE&jct=9Leh8O_yrRTB0Kcv3rMKZHncZq8POg).
+
+## Organizers
+
+* Joel Speed (**[@JoelSpeed](https://github.com/JoelSpeed)**), Red Hat
+* Aaron Prindle (**[@aaron-prindle](https://github.com/aaron-prindle)**), Google
+
+## Contact
+- Slack: [#wg-api-expression](https://kubernetes.slack.com/messages/wg-api-expression)
+- [Mailing list](https://groups.google.com/forum/#!forum/kubernetes-wg-api-expression)
+- [Open Community Issues/PRs](https://github.com/kubernetes/community/labels/wg%2Fapi-expression)
+- Steering Committee Liaison: Benjamin Elder (**[@BenTheElder](https://github.com/BenTheElder)**)
+<!-- BEGIN CUSTOM CONTENT -->
+
+<!-- END CUSTOM CONTENT -->