Darren Everett Criss (born February 5, 1987) is an American actor, singer, and songwriter. He rose to fame starring on the television series Glee (2010–2015) and received a Primetime Emmy Award and Golden Globe Award for his leading role as spree killer Andrew Cunanan in The Assassination of Gianni Versace: American Crime Story (2018). He has also appeared on Broadway and in film and has released several musical albums.

A founding member and co-owner of StarKid Productions, a musical theater company based in Los Angeles, Criss first garnered attention playing the lead role of Harry Potter in (and writing most of the music and lyrics for) StarKid's musical production of A Very Potter Musical. Criss has also starred on Broadway as a replacement in both How to Succeed in Business Without Really Trying and Hedwig and the Angry Inch. In 2015, Criss co-founded Elsie Fest which is touted as "New York City's first outdoor music festival celebrating tunes from the stage and screen".

In March 2017, Criss debuted his indie pop band Computer Games along with his brother Chuck Criss. In addition to his music endeavors, Criss starred in the second installment of Ryan Murphy's American Crime Story. Subtitled The Assassination of Gianni Versace (2018), Criss's portrayal of spree killer Andrew Cunanan received acclaim from critics, and earned him an Emmy Award for Outstanding Lead Actor in a Limited Series or Movie and a Golden Globe Award for Best Actor – Miniseries, or Television Film.

In 2025, Criss won two Tony Awards, for Best Actor in a Musical, becoming the first Asian American actor to win in the category, and for Best Musical as co-producer, both for Maybe Happy Ending.