Diana Reyna (born November 23, 1973) is an American politician who was the deputy borough president for Brooklyn and a member of the New York City Council from the 34th District, which includes Williamsburg and Bushwick as well as Ridgewood in Queens.

Reyna ran for lieutenant governor of New York in the 2022 election as U.S. Representative Thomas Suozzi's running mate.

Previously, she was the chief of staff to the New York State Assembly member and chairman of the Kings County (Brooklyn) Democratic Party, Vito Lopez.

They have since had a very public falling-out, culminating in Lopez running an unsuccessful candidate, Maritza Davila, against Reyna in the 2009 primary and general election.

[1] Reyna was prevented by term limits from running for re-election to the city council in 2013; Lopez attempted to succeed her, but lost in the primary to Antonio Reynoso.