Juhani "Juhku" Kumpulainen (31 July 1925, in Viipuri – 12 November 1991, in Helsinki) was a Finnish actor and director.
Kumpulainen was also the official YLE's administrative and organizational tasks as well as Tesvisio facility manager.
Juhani Kumpulainen was remembered best as a long-standing credit actor of Spede Pasanen and Ere Kokkonen.
His last role was a lieutenant-colonel Mäkihakola-Kustaaraivio in the movie Vääpeli Körmy ja vetenalaiset vehkeet directed by Ere Kokkonen.
Kumpulainen appeared also in movies Here, Beneath the North Star, Akseli and Elina and Pohjantähti, playing a saw owner A. Mellola.