Investigation Held by Kolobki (Russian: Следствие ведут Колобки, translit. Sledstvie vedut kolobki) is a series of Soviet animated shorts by Alexander Tatarsky and Igor Kovalyov that were produced from 1986 to 1987.

The first two shorts were produced by Soyuztelefilm in 1986, whereas the third and fourth shorts were produced by Studio Ekran in 1987.

After the shorts were released, the Pilot Brothers duo came to be heavily used by Tatarskiy's studio, Pilot TV, particularly in the series The Fruttis Attic and The Academy of Our Mistaks [sic].

The name of the series of shorts is a pun on a once-popular Soviet television series Investigation Held by ZnaToKi.