Timothy John Kirkby (born 13 November 1970 in Sidcup, Kent, England) is a British filmmaker, working in both the United Kingdom and the United States. He is best known for directing the science parody series Look Around You, the BAFTA winning BBC 2 show Stewart Lee's Comedy Vehicle, and setting up the multi-award winning Fleabag.

Kirkby made his TV directorial debut with the BAFTA nominated science spoof Look Around You. He received further recognition for the first season of the BAFTA nominated My Mad Fat Diary, the BAFTA nominated BBC single drama The C Word, and more recently the critically acclaimed Fleabag.