diff --git a/CHANGELOG.md b/CHANGELOG.md
index 722f546c8..b3d4c4515 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@
     Bug #5441: Enemies can't push a player character when in critical strike stance
     Bug #5451: Magic projectiles don't disappear with the caster
     Bug #5452: Autowalk is being included in savegames
+    Feature #5297: Add a search function to the "Datafiles" tab of the OpenMW launcher
     Feature #5362: Show the soul gems' trapped soul in count dialog
     Feature #5445: Handle NiLines
 
diff --git a/components/contentselector/view/contentselector.cpp b/components/contentselector/view/contentselector.cpp
index 57f1fdcf3..6bb8e6e2c 100644
--- a/components/contentselector/view/contentselector.cpp
+++ b/components/contentselector/view/contentselector.cpp
@@ -40,16 +40,37 @@ void ContentSelectorView::ContentSelector::buildGameFileView()
     ui.gameFileView->setCurrentIndex(0);
 }
 
+class AddOnProxyModel : public QSortFilterProxyModel
+{
+public:
+    explicit AddOnProxyModel(QObject* parent = nullptr) :
+        QSortFilterProxyModel(parent)
+    {}
+
+    bool filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const override
+    {
+        static const QString ContentTypeAddon = QString::number((int)ContentSelectorModel::ContentType_Addon);
+
+        QModelIndex nameIndex = sourceModel()->index(sourceRow, 0, sourceParent);
+        const QString userRole = sourceModel()->data(nameIndex, Qt::UserRole).toString();
+
+        return QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent) && userRole == ContentTypeAddon;
+    }
+};
+
 void ContentSelectorView::ContentSelector::buildAddonView()
 {
     ui.addonView->setVisible (true);
 
-    mAddonProxyModel = new QSortFilterProxyModel(this);
-    mAddonProxyModel->setFilterRegExp (QString::number((int)ContentSelectorModel::ContentType_Addon));
-    mAddonProxyModel->setFilterRole (Qt::UserRole);
+    mAddonProxyModel = new AddOnProxyModel(this);
+    mAddonProxyModel->setFilterRegExp(searchFilter()->text());
+    mAddonProxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
     mAddonProxyModel->setDynamicSortFilter (true);
     mAddonProxyModel->setSourceModel (mContentModel);
 
+    connect(ui.searchFilter, SIGNAL(textEdited(QString)), mAddonProxyModel, SLOT(setFilterWildcard(QString)));
+    connect(ui.searchFilter, SIGNAL(textEdited(QString)), this, SLOT(slotSearchFilterTextChanged(QString)));
+
     ui.addonView->setModel(mAddonProxyModel);
 
     connect(ui.addonView, SIGNAL(activated(const QModelIndex&)), this, SLOT(slotAddonTableItemActivated(const QModelIndex&)));
@@ -261,3 +282,8 @@ void ContentSelectorView::ContentSelector::slotCopySelectedItemsPaths()
         clipboard->setText(filepaths);
     }
 }
+
+void ContentSelectorView::ContentSelector::slotSearchFilterTextChanged(const QString& newText)
+{
+    ui.addonView->setDragEnabled(newText.isEmpty());
+}
diff --git a/components/contentselector/view/contentselector.hpp b/components/contentselector/view/contentselector.hpp
index 9c34e24fd..f1058d510 100644
--- a/components/contentselector/view/contentselector.hpp
+++ b/components/contentselector/view/contentselector.hpp
@@ -48,6 +48,9 @@ namespace ContentSelectorView
         QToolButton *refreshButton() const  
             { return ui.refreshButton; }        
 
+        QLineEdit *searchFilter() const
+            { return ui.searchFilter; }
+
 
    private:
 
@@ -74,6 +77,7 @@ namespace ContentSelectorView
         void slotCheckMultiSelectedItems();
         void slotUncheckMultiSelectedItems();
         void slotCopySelectedItemsPaths();
+        void slotSearchFilterTextChanged(const QString& newText);
     };
 }
 
diff --git a/files/ui/contentselector.ui b/files/ui/contentselector.ui
index d13cb314e..c099649b3 100644
--- a/files/ui/contentselector.ui
+++ b/files/ui/contentselector.ui
@@ -66,6 +66,9 @@
            </property>
           </widget>
          </item>
+         <item>
+          <widget class="QLineEdit" name="searchFilter"/>
+         </item>
          <item>
           <widget class="QToolButton" name="refreshButton">
            <property name="enabled">