Lukas Gage (born May 28, 1995) is an American actor. He appeared in the television series American Vandal (2017), Euphoria (2019), The White Lotus (2021), You (2023), and Fargo (2023), as well as the films Smile 2 (2024) and Companion (2025).
Gage was born on May 28, 1995, in San Diego, California, and raised in Encinitas, California. His father is from a Jewish family from New York. Gage went to film camp every summer and acted in plays and commercials. He attended San Dieguito Academy in Encinitas.
In November 2020, Gage posted a clip of an audition on Zoom during which director Tristram Shapeero could be heard criticizing Gage's apartment, unaware that his microphone was not muted. Gage received messages of support from others in the film industry. Although he did not get the job, the rejection allowed him to accept a part on the HBO miniseries The White Lotus.
Gage published his memoir I Wrote This for Attention in October 2025, making his writing debut.
Hairstylist Chris Appleton confirmed his relationship with Gage on The Drew Barrymore Show in March 2023, and early the following month the pair became engaged. Nineteen days later, Appleton and Gage were married. On November 13, 2023, Appleton filed for divorce from Gage, citing irreconcilable differences. In June 2024, the divorce was settled. In November 2025, Gage said about his sexuality: "I think I'm queer. Gay 90 per cent, 10 per cent straight. Can I say that? I don't know. Am I only with men? No. I don't know exactly what the label is for that. But mostly gay."
Gage revealed in his memoir that he has been diagnosed with borderline personality disorder.