Jakub (Josek) Kolski (1899, Łódź – 1941, Warsaw) was a Polish chess master.
In the period 1920-1930s, Kolski was one of the strongest Łódź chess players.
In 1926, he tied for 3rd-7th in Warsaw (1st POL-ch; Dawid Przepiórka won).
In 1927, he tied for 11-12th in Łódź (2nd POL-ch; Akiba Rubinstein won).
[3] At the beginning of World War II, he left Łódź for Warsaw in 1939.