Duke of Kent and Strathearn is a title that was created once in the Peerage of Great Britain.

Several Earls of Kent had previously been created in the Peerage of England.

On 23 April 1799, the double dukedom of Kent and Strathearn was given, along with the Earldom of Dublin, to King George III's fourth son, Prince Edward Augustus.

[1] After the Union of Great Britain, the Hanoverian kings liked to grant double titles (one from one constituent country, one from another) to emphasise unity.

Upon Edward's death in 1820, the dukedom of Kent and Strathearn became extinct, as he had no legitimate male heir.