Rautakauppias Uuno Turhapuro - presidentin vävy (Hardware Dealer Uuno Turhapuro, the President's Son-in-Law, also Hardware Dealer Numbskull Emptybrook, the President's Son-in-Law) is a Finnish 1978 comedy film written by Spede Pasanen and directed by Ere Kokkonen. It is the fifth film in the Uuno Turhapuro series, and it is the last Uuno Turhapuro film in black and white.

The film's script is built on the basis of reheated sketches from the Spede Show, the most notable of which is the 13-minute "hardware store" sketch.