Yes you can. By changing the android:label
field in your application node in AndroidManifest.xml
.
Note: If you have added a Splash Screen and added
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
to your Splash Screen, then the Launcher Icon name will be changed to the name of your Splash Screen Class name.
Please make sure that you change label:
android:label="@string/title_activity_splash_screen"
in your Splash Screen activity in your strings.xml file. It can be found in Res -> Values -> strings.xml
See more here.