Kristoffer Diaz  is a playwright, librettist, screenwriter, and educator. His play The Elaborate Entrance of Chad Deity was a finalist for the Pulitzer Prize in Drama. His adaptation of the Disney film Hercules premiered in Central Park in Summer 2019 as part of the Joseph Papp Public Theater’s Public Works program with a cast of nearly 200. Other full-length titles include Welcome to Arroyo’s, Reggie Hoops, and The Unfortunates. His work has been produced, commissioned, and developed at The Public Theater, Dallas Theater Center, Geffen Playhouse, ACT, Center Theatre Group, The Goodman, Second Stage, Victory Gardens, and Oregon Shakespeare Festival, among many others. Awards include the Guggenheim, Jerome, Van Lier, NYFA, and Gail Merrifield Papp Fellowships; New York Times Outstanding Playwright Award; Lucille Lortel, Equity Jeff, and OBIE Awards; and the Future Aesthetics Artist Regrant, among others.

As a screenwriter, Kristoffer has developed original television pilots for HBO and FX, written for the first season of Netflix's GLOW, and adapted the musical Rent for FOX.

Kristoffer holds a BA from New York University’s Gallatin School of Individualized Study, an MFA from NYU’s Department of Dramatic Writing, and an MFA from Brooklyn College’s Performing Arts Management program. He teaches playwriting at New York University. He is an alumni of New Dramatists and a member of its Board of Directors, a member of the Dramatists Guild Council, and a member of the Writer’s Guild of America, East.