One Israel (Hebrew: ישראל אחת, Yisrael Ahat) was an alliance of the Labor Party, Meimad and Gesher created to run for the 1999 Knesset elections.

One Israel was formed by Labor leader Ehud Barak in the run-up to the 1999 elections with the aim of making Labor appear more centrist and to reduce its secularist and elitist reputation amongst Mizrahi voters (Gesher was led by prominent Mizrahi politician and former Likud MK David Levy whilst Meimad is a religious party) modelled on Tony Blair's transformation of the British Labour Party into New Labour.

However, although One Israel did emerge as the largest faction in the Knesset, its 26 seats was the lowest ever by a winning party (Labor's 34 in the 1996 elections whilst running alone had been the previous low).

Barak's participation in the Camp David Summit with Yasser Arafat in summer 2000 led to Gesher pulling out of the alliance on 7 March 2001.

State Comptroller Eliezer Goldberg had already fined the party 13 million shekels for breaking fund-raising laws.