Isahak Basir CCH (sometimes Bashir,[2] c. 18 September 1935 – 1 February 2019)[3] was a Guyanese historian who was a member of the National Assembly of Guyana from 1977 to 1991.

After marriage, the couple moved to the Essequibo Coast where Basir worked as an assistant distiller at the Uitvlugt Distillery.

[7] While at the Uitvlugt Distillery, Basir met Harripersaud Nokta and C. V. Nunes, members of the People's Progressive Party of Guyana (PPP) who encouraged him to join.

[2] In 1976, one year after he moved to Hampton Court with Sabra Karim and his children, he was shot five times on a trip that he was invited to by Cheddi Jagan but survived.

[7] After his career in politics, Basir worked at the Essequibo Technical Institute as an advisor to the Local Administration and Board of Governors.

In 2002, President and PPP leader Bharrat Jagdeo announced Basir would no longer be a member of the committee.