Red is a two-handed play by American writer John Logan about the artist Mark Rothko. It was first produced by the Donmar Warehouse, London, on December 8, 2009, in a production directed by Michael Grandage. It then transferred to Broadway in March 2010 with the same two leads, Alfred Molina and Eddie Redmayne, where it won 6 Tony Awards.

The play has subsequently been performed in many locations around the world, with a 2018 revival in London directed by Grandage, with Molina reprising his original role as Rothko.

"There is only one thing I fear in life, my friend... One day the black will swallow the red."

Mark Rothko is in his New York studio in 1958/59, having been commissioned to paint a group of murals for the expensive and exclusive Four Seasons restaurant. He gives orders to his assistant, Ken, as Ken mixes the paints, makes the frames, and primes the canvases. Ken, however, eventually brashly questions Rothko's theories of art and his acceding to work on such a commercial project. For his part, Rothko dislikes the rise of pop art.

Ultimately, Rothko stops working on the project and decides to return the money. He explains to Ken that the Four Seasons is an inappropriate place for his murals to be seen.

The original production at the Donmar Warehouse, premiering on December 8, 2009, was directed by Michael Grandage and performed by Alfred Molina as Rothko and Eddie Redmayne as his fictional assistant Ken.

The production, with its two leads, transferred to Broadway at the John Golden Theatre for a limited engagement which began on March 11, 2010, and closed on June 27.

Reviews for the London production were mixed for the play but positive for Molina's performance. Michael Billington in The Guardian wrote: "Alfred Molina, with his large frame and beetling eyebrows, has exactly the fierce intensity of an artist whose paintings were a dynamic battle between Apollo and Dionysus".