diff --git a/.changeset/short-eggs-confess.md b/.changeset/short-eggs-confess.md
new file mode 100644
index 0000000000..3fa240a347
--- /dev/null
+++ b/.changeset/short-eggs-confess.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend-module-ldap': patch
+---
+
+Expose missing types used by the custom transformers
diff --git a/plugins/catalog-backend-module-ldap/api-report.md b/plugins/catalog-backend-module-ldap/api-report.md
index 446dc2df52..82b07def03 100644
--- a/plugins/catalog-backend-module-ldap/api-report.md
+++ b/plugins/catalog-backend-module-ldap/api-report.md
@@ -22,6 +22,26 @@ export function defaultGroupTransformer(vendor: LdapVendor, config: GroupConfig,
 // @public (undocumented)
 export function defaultUserTransformer(vendor: LdapVendor, config: UserConfig, entry: SearchEntry): Promise<UserEntity | undefined>;
 
+// @public
+export type GroupConfig = {
+    dn: string;
+    options: SearchOptions;
+    set?: {
+        [path: string]: JsonValue;
+    };
+    map: {
+        rdn: string;
+        name: string;
+        description: string;
+        type: string;
+        displayName: string;
+        email?: string;
+        picture?: string;
+        memberOf: string;
+        members: string;
+    };
+};
+
 // @public
 export type GroupTransformer = (vendor: LdapVendor, config: GroupConfig, group: SearchEntry) => Promise<GroupEntity | undefined>;
 
@@ -70,6 +90,13 @@ export type LdapProviderConfig = {
     groups: GroupConfig;
 };
 
+// @public
+export type LdapVendor = {
+    dnAttributeName: string;
+    uuidAttributeName: string;
+    decodeStringAttribute: (entry: SearchEntry, name: string) => string[];
+};
+
 // @public
 export function mapStringAttr(entry: SearchEntry, vendor: LdapVendor, attributeName: string | undefined, setter: (value: string) => void): void;
 
@@ -86,6 +113,24 @@ export function readLdapOrg(client: LdapClient, userConfig: UserConfig, groupCon
     groups: GroupEntity[];
 }>;
 
+// @public
+export type UserConfig = {
+    dn: string;
+    options: SearchOptions;
+    set?: {
+        [path: string]: JsonValue;
+    };
+    map: {
+        rdn: string;
+        name: string;
+        description?: string;
+        displayName: string;
+        email: string;
+        picture?: string;
+        memberOf: string;
+    };
+};
+
 // @public
 export type UserTransformer = (vendor: LdapVendor, config: UserConfig, user: SearchEntry) => Promise<UserEntity | undefined>;
 
diff --git a/plugins/catalog-backend-module-ldap/src/ldap/index.ts b/plugins/catalog-backend-module-ldap/src/ldap/index.ts
index a9f127a3a7..70500299ae 100644
--- a/plugins/catalog-backend-module-ldap/src/ldap/index.ts
+++ b/plugins/catalog-backend-module-ldap/src/ldap/index.ts
@@ -17,7 +17,8 @@
 export { LdapClient } from './client';
 export { mapStringAttr } from './util';
 export { readLdapConfig } from './config';
-export type { LdapProviderConfig } from './config';
+export type { LdapProviderConfig, GroupConfig, UserConfig } from './config';
+export type { LdapVendor } from './vendors';
 export {
   LDAP_DN_ANNOTATION,
   LDAP_RDN_ANNOTATION,