Zosia Mamet is among the thesps signed on to appear in Off Broadway play “Really Really,” getting a run at MCC Theater next year.

Mamet — the “Girls” co-star whose father, scribe-helmer David Mamet, is currently repped on the Rialto with “Glengarry Glen Ross” and the soon-to-shutter “The Anarchist” — will be part of a cast that also includes Matt Lauria (“Friday Night Lights”) and Evan Jonigkeit (“High” on Broadway) in a David Cromer-helmed production of Paul Downs Colaizzo’s play, which bowed in a well-received run at Washington, D.C.’s Signature Theater last season.

Storyline centers on a group of twentysomethings set reeling in the aftermath of a wild night of partying. Lauren Culpepper (who appeared in the D.C. preem of “Really Really”), David Hull, Kobi Libii and Aleque Reid also are among the cast.

The MCC production begins previews Jan. 31 prior to a Feb. 19 opening at the Lucille Lortel Theater.