diff --git a/src/common/ant-registry.ts b/src/common/ant-registry.ts
new file mode 100644
index 00000000..a1f348b3
--- /dev/null
+++ b/src/common/ant-registry.ts
@@ -0,0 +1,106 @@
+/**
+ * Copyright (C) 2022-2024 Permanent Data Solutions, Inc. All Rights Reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+import { ANT_REGISTRY_ID } from '../constants.js';
+import {
+  AoANTRegistryRead,
+  AoANTRegistryWrite,
+  AoMessageResult,
+  AoSigner,
+  OptionalSigner,
+  ProcessConfiguration,
+  WithSigner,
+  isProcessConfiguration,
+  isProcessIdConfiguration,
+} from '../types.js';
+import { createAoSigner } from '../utils/ao.js';
+import { AOProcess } from './index.js';
+
+export class ANTRegistry {
+  static init(): AoANTRegistryRead;
+  static init(
+    config: Required<ProcessConfiguration> & { signer?: undefined },
+  ): AoANTRegistryRead;
+  static init({
+    signer,
+    ...config
+  }: WithSigner<Required<ProcessConfiguration>>): AoANTRegistryRead;
+  static init(
+    config?: OptionalSigner<ProcessConfiguration>,
+  ): AoANTRegistryRead | AoANTRegistryWrite {
+    if (config && config.signer) {
+      const { signer, ...rest } = config;
+      return new AoANTRegistryWriteable({
+        ...rest,
+        signer,
+      });
+    }
+    return new AoANTRegistryReadable(config);
+  }
+}
+
+export class AoANTRegistryReadable implements AoANTRegistryRead {
+  protected process: AOProcess;
+
+  constructor(config?: ProcessConfiguration) {
+    if (
+      config &&
+      (isProcessIdConfiguration(config) || isProcessConfiguration(config))
+    ) {
+      this.process = AOProcess.fromConfiguration(config);
+    } else {
+      this.process = AOProcess.fromConfiguration({
+        processId: ANT_REGISTRY_ID,
+      });
+    }
+  }
+
+  // Should we rename this to "getANTsByAddress"? seems more clear, though not same as handler name
+  async accessControlList({ address }: { address: string }): Promise<string[]> {
+    return this.process.read({
+      tags: [
+        { name: 'Action', value: 'Access-Control-List' },
+        { name: 'Address', value: address },
+      ],
+    });
+  }
+}
+
+export class AoANTRegistryWriteable
+  extends AoANTRegistryReadable
+  implements AoANTRegistryWrite
+{
+  private signer: AoSigner;
+
+  constructor({ signer, ...config }: WithSigner<ProcessConfiguration>) {
+    super(config);
+    this.signer = createAoSigner(signer);
+  }
+
+  async register({
+    processId,
+  }: {
+    processId: string;
+  }): Promise<AoMessageResult> {
+    return this.process.send({
+      tags: [
+        { name: 'Action', value: 'Register' },
+        { name: 'Process-Id', value: processId },
+      ],
+      signer: this.signer,
+    });
+  }
+}
diff --git a/src/common/contracts/ao-process.ts b/src/common/contracts/ao-process.ts
index 3ed4a61c..9e20e2e0 100644
--- a/src/common/contracts/ao-process.ts
+++ b/src/common/contracts/ao-process.ts
@@ -16,10 +16,20 @@
  */
 import { connect } from '@permaweb/aoconnect';
 
-import { AOContract, AoClient, AoSigner } from '../../types.js';
+import {
+  AOContract,
+  AoClient,
+  AoSigner,
+  ProcessConfiguration,
+  isProcessConfiguration,
+  isProcessIdConfiguration,
+} from '../../types.js';
 import { safeDecode } from '../../utils/json.js';
 import { version } from '../../version.js';
-import { WriteInteractionError } from '../error.js';
+import {
+  InvalidContractConfigurationError,
+  WriteInteractionError,
+} from '../error.js';
 import { ILogger, Logger } from '../logger.js';
 
 export class AOProcess implements AOContract {
@@ -41,6 +51,18 @@ export class AOProcess implements AOContract {
     this.ao = ao;
   }
 
+  static fromConfiguration(config: Required<ProcessConfiguration>) {
+    if (isProcessConfiguration(config)) {
+      return config.process;
+    } else if (isProcessIdConfiguration(config)) {
+      return new AOProcess({
+        processId: config.processId,
+      });
+    } else {
+      throw new InvalidContractConfigurationError();
+    }
+  }
+
   async read<K>({
     tags,
     retries = 3,
diff --git a/src/common/index.ts b/src/common/index.ts
index 63a144b8..959e5ea1 100644
--- a/src/common/index.ts
+++ b/src/common/index.ts
@@ -17,6 +17,7 @@
 export * from './error.js';
 export * from './logger.js';
 export * from './ant.js';
+export * from './ant-registry.js';
 
 // ao
 export * from './io.js';
diff --git a/src/constants.ts b/src/constants.ts
index 7b72e504..f6308c9d 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -37,6 +37,10 @@ export const IO_DEVNET_PROCESS_ID =
 export const ioDevnetProcessId = IO_DEVNET_PROCESS_ID;
 export const IO_TESTNET_PROCESS_ID =
   'agYcCFJtrMG6cqMuZfskIkFTGvUPddICmtQSBIoPdiA';
+
+// TODO: set ant registry ID with deployed contract
+export const ANT_REGISTRY_ID =
+  process.env.ANT_REGISTRY_ID ?? 'todo-set-ant-registry-id';
 export const MIO_PER_IO = 1_000_000;
 export const AOS_MODULE_ID = 'cbn0KKrBZH7hdNkNokuXLtGryrWM--PjSTBqIzw9Kkk';
 export const ANT_LUA_ID = 'Flwio4Lr08g6s6uim6lEJNnVGD9ylvz0_aafvpiL8FI';
diff --git a/src/io.ts b/src/io.ts
index 27c36553..3f8d755f 100644
--- a/src/io.ts
+++ b/src/io.ts
@@ -325,6 +325,14 @@ export interface AoANTWrite extends AoANTRead {
   setName({ name }): Promise<AoMessageResult>;
 }
 
+export interface AoANTRegistryRead {
+  accessControlList(params: { address: string }): Promise<string[]>;
+}
+
+export interface AoANTRegistryWrite extends AoANTRegistryRead {
+  register(params: { processId: string }): Promise<AoMessageResult>;
+}
+
 // AO Contract types
 export interface AoIOState {
   GatewayRegistry: Record<WalletAddress, AoGateway>;