Walid Haj Yahia (Arabic: وليد حاج يحيى; Hebrew: וליד חאג'-יחיא, also known as Walid Sadik, 1936 – 21 March 2015) was an Israeli Arab former politician who served as a member of the Knesset for the Left Camp of Israel and Meretz.

Born in Tayibe during the Mandate era, Haj Yahia studied at the Hebrew University of Jerusalem, gaining a BA in sociology and political science.

He worked as headmaster of a high school in Tayibe for 23 years, and was a member of the Teachers' Union's central committee.

Although he missed out on a seat, he entered the Knesset on 13 February 1981 as a replacement for Uri Avnery.

[1] However, he lost his seat in the elections in June that year as the party failed to cross the electoral threshold.