diff --git a/dictation_server/.env.local.example b/dictation_server/.env.local.example
index 8c03436..5aaecca 100644
--- a/dictation_server/.env.local.example
+++ b/dictation_server/.env.local.example
@@ -33,4 +33,5 @@ EMAIL_CONFIRM_LIFETIME=86400
 REDIS_HOST=redis-cache
 REDIS_PORT=6379
 REDIS_PASSWORD=omdsredispass
-ADB2C_CACHE_TTL=86400
\ No newline at end of file
+ADB2C_CACHE_TTL=86400
+DEALER_ACCOUNT_ID_HIDDEN_LIST=1,2,3,4
\ No newline at end of file
diff --git a/dictation_server/.env.test b/dictation_server/.env.test
index a2748df..ca88821 100644
--- a/dictation_server/.env.test
+++ b/dictation_server/.env.test
@@ -34,4 +34,5 @@ REDIS_HOST=redis-cache
 REDIS_PORT=6379
 REDIS_PASSWORD=omdsredispass
 ADB2C_CACHE_TTL=86400
-TEMPLATE_ROOT=dist
\ No newline at end of file
+TEMPLATE_ROOT=dist
+DEALER_ACCOUNT_ID_HIDDEN_LIST=50,99
\ No newline at end of file
diff --git a/dictation_server/src/common/validators/env.validator.ts b/dictation_server/src/common/validators/env.validator.ts
index 8ce706f..8ce1547 100644
--- a/dictation_server/src/common/validators/env.validator.ts
+++ b/dictation_server/src/common/validators/env.validator.ts
@@ -32,6 +32,10 @@ export class EnvValidator {
   @IsString()
   DB_PASSWORD: string;
 
+  @IsOptional()
+  @IsString()
+  DEALER_ACCOUNT_ID_HIDDEN_LIST: string;
+
   // .env.local
   @IsOptional()
   @IsString()
diff --git a/dictation_server/src/features/accounts/accounts.service.spec.ts b/dictation_server/src/features/accounts/accounts.service.spec.ts
index 29c5899..d5e0575 100644
--- a/dictation_server/src/features/accounts/accounts.service.spec.ts
+++ b/dictation_server/src/features/accounts/accounts.service.spec.ts
@@ -2645,6 +2645,35 @@ describe('getDealers', () => {
       ],
     });
   });
+
+  it('非表示指定されたDealer以外のDealerを取得できる', async () => {
+    if (!source) fail();
+    const module = await makeTestingModule(source);
+    if (!module) fail();
+    // 100件のDealerを作成し、country,id,company_nameを取得する
+    const dealers: { country: string; id: number; name: string }[] = [];
+    for (let i = 0; i < 100; i++) {
+      const { id, company_name, country } = (
+        await makeTestAccount(source, {
+          parent_account_id: i,
+          tier: TIERS.TIER4,
+          country: 'JP',
+          company_name: `DEALER_${i}`,
+        })
+      ).account;
+      dealers.push({ id, name: company_name, country });
+    }
+    const service = module.get<AccountsService>(AccountsService);
+    const context = makeContext(`uuidv4`, 'requestId');
+    const result = await service.getDealers(context);
+    // idが50と99のDealerを非表示にする
+
+    expect(result.dealers.length).toBe(98);
+    expect(result).toEqual({
+      dealers: dealers.filter((dealer) => dealer.id !== 50 && dealer.id !== 99),
+    });
+  });
+
   it('0件でもDealerを取得できる', async () => {
     if (!source) fail();
     const module = await makeTestingModule(source);
diff --git a/dictation_server/src/features/accounts/accounts.service.ts b/dictation_server/src/features/accounts/accounts.service.ts
index 8b6e271..688981b 100644
--- a/dictation_server/src/features/accounts/accounts.service.ts
+++ b/dictation_server/src/features/accounts/accounts.service.ts
@@ -72,9 +72,13 @@ import {
   WorktypeIdNotFoundError,
 } from '../../repositories/worktypes/errors/types';
 import { getUserNameAndMailAddress } from '../../gateways/adb2c/utils/utils';
+import { ConfigService } from '@nestjs/config';
 
 @Injectable()
 export class AccountsService {
+  // プロダクト バックログ項目 4077: [保守]本番環境動作確認用のDealerアカウントを表示しないようにする の対応
+  private readonly dealerAccountIdHiddenList: number[] = [];
+  private readonly logger = new Logger(AccountsService.name);
   constructor(
     private readonly accountRepository: AccountsRepositoryService,
     private readonly licensesRepository: LicensesRepositoryService,
@@ -84,8 +88,27 @@ export class AccountsService {
     private readonly adB2cService: AdB2cService,
     private readonly sendgridService: SendGridService,
     private readonly blobStorageService: BlobstorageService,
-  ) {}
-  private readonly logger = new Logger(AccountsService.name);
+    private readonly configService: ConfigService,
+  ) {
+    const dealerAccountIdList = this.configService.get<string>(
+      'DEALER_ACCOUNT_ID_HIDDEN_LIST',
+    );
+    // ディーラーアカウントIDリストを数値配列に変換する
+    // 変換できない場合はエラーをスローする
+    // 存在しない場合や空文字列の場合は空の配列を返す
+    if (dealerAccountIdList) {
+      this.dealerAccountIdHiddenList = dealerAccountIdList
+        .split(',')
+        .map((x) => {
+          const id = parseInt(x, 10);
+          if (isNaN(id)) {
+            throw new Error('DEALER_ACCOUNT_ID_HIDDEN_LIST is invalid');
+          }
+          return id;
+        });
+    }
+  }
+
   /**
    * 第五階層用のライセンス情報を取得する
    * @param accountId
@@ -1174,9 +1197,26 @@ export class AccountsService {
       const dealerAccounts = await this.accountRepository.findDealerAccounts(
         context,
       );
+      // プロダクト バックログ項目 4077: [保守]本番環境動作確認用のDealerアカウントを表示しないようにする の対応
+      // this.dealerAccountIdHiddenListに含まれるアカウント(動作確認用のアカウント)を除外する。
+      // 除外したアカウントをlogに出力する
+      const filteredDealerAccounts = dealerAccounts.filter((dealerAccount) => {
+        const isHidden = this.dealerAccountIdHiddenList.includes(
+          dealerAccount.id,
+        );
+        if (isHidden) {
+          this.logger.log(
+            `[${context.getTrackingId()}] hidden dealer account: ${
+              dealerAccount.id
+            }`,
+          );
+        }
+        return !isHidden;
+      });
 
+      // レスポンス用の型に変換
       const dealers: GetDealersResponse = {
-        dealers: dealerAccounts.map((dealerAccount): Dealer => {
+        dealers: filteredDealerAccounts.map((dealerAccount): Dealer => {
           return {
             id: dealerAccount.id,
             name: dealerAccount.company_name,