Izak (Izhak, Itzchak) Aloni (Schächter) (Hebrew: יצחק אלוני; 5 April 1905 – 2 June 1985[1]) was an Israeli chess master.

During World War II, he played in Lviv (then in USSR); took 9th in March 1940 ("West Ukrainian" championship, Abram Khavin won), tied for 3rd-5th in August 1940 ("Spartak" Club, Edward Gerstenfeld won), and tied for 4–5th in the Lviv City championship in March 1941 (Gerstenfeld won).

In June 1941, when the German-Soviet War broke out, he as a former Soviet militiaman was sent to Kazakhstan.

He served in the Polish Armed Forces in the East (Iran, Iraq, Palestine) till January 25, 1945.

He also played several times in the Tel Aviv City championships.