diff --git a/repositories.tf b/repositories.tf
index ca7e69f..9948ed5 100644
--- a/repositories.tf
+++ b/repositories.tf
@@ -121,6 +121,34 @@ module "repo_fulfillment_service" {
   }
 }
 
+module "repo_osac" {
+  source      = "./modules/common_repository"
+  visibility  = "public"
+  name        = "osac"
+  description = "OSAC mono-repo (OSAC-1732): consolidates fulfillment-service, osac-operator, osac-aap, and osac-installer"
+  teams = [
+    {
+      team_id    = "fulfillment-wg"
+      permission = "push"
+    },
+    {
+      team_id    = "wg-infra"
+      permission = "admin"
+    }
+  ]
+  required_approvals = null
+  # No required_status_checks yet -- the mono-repo's CI (OSAC-1734) doesn't exist
+  # until content is merged in. Add checks here once that CI is built, following
+  # the same pattern as repo_fulfillment_service/repo_cloudkit_operator above.
+  required_status_checks = []
+  # OSAC-1732 constraint: preserve subtree-merge history/blame going forward --
+  # squash-merging on the mono-repo would collapse that history for every
+  # commit after cutover, so it's disabled at the GitHub level, not just by convention.
+  allow_squash_merge      = false
+  ruleset_bypass_team_ids = [github_team.all["wg-infra"].id]
+  push_allowances         = ["/openshift-merge-robot", "osac-project/wg-infra", "osac-project/org-admins"]
+}
+
 module "repo_cloudkit_operator" {
   source      = "./modules/common_repository"
   visibility  = "public"