Sjeničak Lasinjski is a village in central Croatia, in the municipality of Lasinja, Karlovac County.

Today's name Sjeničak originates from the medieval town of Steničnjak, built at the beginning of the 12th century.

On 21 September 1897, residents of Sjeničak Lasinjski rose in rebellion (known as Sjeničak rebellion, Croatian: Sjeničarska buna) against (perceived) Hungarisation and loss of privileges previously granted to them as border guards.

A number of young men from the village, Dr. Gojko Nikoliš being one of them, went to Spain to fight as members of the International Brigade in 1936-1937.

Sjeničak Lasinjski suffered significant demographic losses in the World War II with 352 of its residents perishing.