diff --git a/AgileWorks/AgileWorks/Main/Builder/MainTabBarViewBuilder.swift b/AgileWorks/AgileWorks/Main/Builder/MainTabBarViewBuilder.swift
index 8036bf9bf167dff81674be5c8cf8a33fb9ffdcd6..75fc631d02b0a6e5253e1a54e56f91925951a184 100644
--- a/AgileWorks/AgileWorks/Main/Builder/MainTabBarViewBuilder.swift
+++ b/AgileWorks/AgileWorks/Main/Builder/MainTabBarViewBuilder.swift
@@ -82,35 +82,35 @@ extension MainTabBarViewBuilderImpl {
             view.tabBarItem.image = createTabBarItem(imageName: BarItem.home.rawValue, color: normalColor)
             view.tabBarItem.selectedImage = createTabBarItem(imageName: SelectedBarItem.home.rawValue, color: selectedColor)
             viewVC.loadURL = createLoadUrl(urlPath: ViewURL.home.rawValue)
-            viewVC.naviTitle = getDisplayString(key: "HomeTitle", comment: "")
+            viewVC.navigationItem.title = getDisplayString(key: "HomeTitle", comment: "")
             viewVC.tabTitleKey = "HomeTitle"
         case ViewType.work.rawValue:
             view.tabBarItem.title = getDisplayString(key: "WorkTitle", comment: "")
             view.tabBarItem.image = createTabBarItem(imageName: BarItem.work.rawValue, color: normalColor)
             view.tabBarItem.selectedImage = createTabBarItem(imageName: SelectedBarItem.work.rawValue, color: selectedColor)
             viewVC.loadURL = createLoadUrl(urlPath: ViewURL.work.rawValue)
-            viewVC.naviTitle = getDisplayString(key: "WorkTitle", comment: "")
+            viewVC.navigationItem.title = getDisplayString(key: "WorkTitle", comment: "")
             viewVC.tabTitleKey = "WorkTitle"
         case ViewType.documents.rawValue:
             view.tabBarItem.title = getDisplayString(key: "DocumentsTitle", comment: "")
             view.tabBarItem.image = createTabBarItem(imageName: BarItem.documents.rawValue, color: normalColor)
             view.tabBarItem.selectedImage = createTabBarItem(imageName: SelectedBarItem.documents.rawValue, color: selectedColor)
             viewVC.loadURL = createLoadUrl(urlPath: ViewURL.documents.rawValue)
-            viewVC.naviTitle = getDisplayString(key: "DocumentsTitle", comment: "")
+            viewVC.navigationItem.title = getDisplayString(key: "DocumentsTitle", comment: "")
             viewVC.tabTitleKey = "DocumentsTitle"
         case ViewType.search.rawValue:
             view.tabBarItem.title = getDisplayString(key: "SearchTitle", comment: "")
             view.tabBarItem.image = createTabBarItem(imageName: BarItem.search.rawValue, color: normalColor)
             view.tabBarItem.selectedImage = createTabBarItem(imageName: SelectedBarItem.search.rawValue, color: selectedColor)
             viewVC.loadURL = createLoadUrl(urlPath: ViewURL.search.rawValue)
-            viewVC.naviTitle = getDisplayString(key: "SearchTitle", comment: "")
+            viewVC.navigationItem.title = getDisplayString(key: "SearchTitle", comment: "")
             viewVC.tabTitleKey = "SearchTitle"
         default:
             view.tabBarItem.title = getDisplayString(key: "HomeTitle", comment: "")
             view.tabBarItem.image = createTabBarItem(imageName: BarItem.home.rawValue, color: normalColor)
             view.tabBarItem.selectedImage = createTabBarItem(imageName: SelectedBarItem.home.rawValue, color: selectedColor)
             viewVC.loadURL = createLoadUrl(urlPath: ViewURL.home.rawValue)
-            viewVC.naviTitle = getDisplayString(key: "HomeTitle", comment: "")
+            viewVC.navigationItem.title = getDisplayString(key: "HomeTitle", comment: "")
             viewVC.tabTitleKey = "HomeTitle"
         }
         
diff --git a/AgileWorks/AgileWorks/Main/Wireframe/MainTabBarViewWireframe.swift b/AgileWorks/AgileWorks/Main/Wireframe/MainTabBarViewWireframe.swift
index cfeaf2380aa46f029f6e582667faf14c2ea382e1..1ee5b97f02d211ff1fe26fb0276de345419568e8 100644
--- a/AgileWorks/AgileWorks/Main/Wireframe/MainTabBarViewWireframe.swift
+++ b/AgileWorks/AgileWorks/Main/Wireframe/MainTabBarViewWireframe.swift
@@ -69,7 +69,7 @@ extension MainTabBarViewWireframeImpl: MainTabBarViewWireframe {
         let modalWebVC = WebViewBuilderImpl().buildVC()
         // URL , タイトル設定
         modalWebVC.loadURL = notificationData.url
-        modalWebVC.naviTitle = notificationData.title
+        modalWebVC.navigationItem.title = notificationData.title
         modalWebVC.showNotification = true
         let nav = UINavigationController(rootViewController: modalWebVC)
         nav.modalPresentationStyle = .fullScreen
diff --git a/AgileWorks/AgileWorks/WebView/View/WebViewController.swift b/AgileWorks/AgileWorks/WebView/View/WebViewController.swift
index 629356c07f8efe433859cf5ab7688f1663127a00..811846b871f4e81da7f7e463af81dcb12826a9be 100644
--- a/AgileWorks/AgileWorks/WebView/View/WebViewController.swift
+++ b/AgileWorks/AgileWorks/WebView/View/WebViewController.swift
@@ -22,7 +22,6 @@ class WebViewController: UIViewController {
     // 別ウインドウで開いたときの子ウインドウスタック
     var subViewStack = SubViewStack()
     var loadURL: String!
-    var naviTitle: String!
     var showNotification = false
     // UserAgent
     let kCustomUserAgent = "AwMobileApp Safari/605.1.15"
@@ -34,20 +33,12 @@ class WebViewController: UIViewController {
     //widgetから新規タブを開く際のフラグ
     var openByWidget = false
     // 表示中タイトルキー
-    var nowTitleKey: String!
     var tabTitleKey: String!
     // 現在表示中のURL
     var nowURL: String!
     // 初期ロード完了フラグ
     var initLoadComp = false
 
-    // Title を設定する URL を定義
-    var urlToTitle: [String: String] = [
-        "Mobile#home": getDisplayString(key: "HomeTitle", comment: ""),
-        "Mobile#work": getDisplayString(key: "WorkTitle", comment: ""),
-        "Mobile#formSelection": getDisplayString(key: "DocumentsTitle", comment: ""),
-        "Mobile#agileWorksSearch": getDisplayString(key: "SearchTitle", comment: "")
-    ]
     // 書類表示時 URL
     let docUrl: [String] = ["Mobile#docDetail", "#docDetail"]
 
@@ -80,7 +71,6 @@ class WebViewController: UIViewController {
 
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
-        self.navigationItem.title = naviTitle
     }
 
     // WebView セットアップ
@@ -285,14 +275,6 @@ class WebViewController: UIViewController {
             if let url = change![NSKeyValueChangeKey.newKey] as? URL {
                 let urlString: String = url.absoluteString
                 self.nowURL = urlString
-                for (key, value) in self.urlToTitle {
-                    if urlString.contains(key) {
-                        // タイトルの再設定
-                        naviTitle = value
-                        break
-                    }
-                }
-                self.navigationItem.title = naviTitle
                 DispatchQueue.main.async {
                     // token チェック
                     self.updateSession(isInit: false)
@@ -374,25 +356,7 @@ class WebViewController: UIViewController {
     }
     //ログイン画面の固定文言表示
     func setupFixedWording() {
-        urlToTitle = [
-            "Mobile#home": getDisplayString(key: "HomeTitle", comment: ""),
-            "Mobile#work": getDisplayString(key: "WorkTitle", comment: ""),
-            "Mobile#formSelection": getDisplayString(key: "DocumentsTitle", comment: ""),
-            "Mobile#agileWorksSearch": getDisplayString(key: "SearchTitle", comment: "")
-        ]
-        if self.nowTitleKey != nil {
-            for (key, value) in urlToTitle {
-                if self.nowTitleKey.contains(key) {
-                    // タイトルの再設定
-                    naviTitle = value
-                    break
-                }
-            }
-        } else {
-            // タイトルの再設定
-            naviTitle = getDisplayString(key: tabTitleKey, comment: "")
-        }
-        self.navigationItem.title = naviTitle
+        self.navigationItem.title = getDisplayString(key: tabTitleKey, comment: "")
         disconnectLabel.text = getDisplayString(key: "DisconnectNetworkLabel", comment: "")
         checkConnectButton.setTitle(getDisplayString(key: "CheckConnectButton", comment: ""), for: .normal)
     }