Spencer Pratt is an American television personality known for his role as the antagonistic husband of Heidi Montagon MTV's The Hills. He is the older brother of Stephanie Pratt who also appears on The Hills.

Pratt first appeared on television in 2005 in the short-lived reality series The Princes of Malibu. He also executive produced the series and acted as a "manager-slash-publicist-slash-agent-slash-stylist" to series star Brody Jenner Pratt's friendship with Jenner led to his role on the MTV reality series The Hills, in 2006. Pratt's relationship with fellow cast member Heidi Montagwas detailed on the series, along with the tension it caused between Montag and series star Lauren Conrad

In April 2009, Pratt and Montag joined the cast of the reality television show, I'm a Celebrity... Get Me out of Here!. Pratt's behavior on the show was criticized as being childish and self-centered, and he drew controversy after claiming that NBC subjected the couple to torture. After four days, the couple quit the show. The couple then changed their mind and returned to the show after completing a challenge. However, they had to leave the show again shortly after returning because Montag had to be hospitalized due to a gastric ulcer. After leaving the hospital, the couple denied rumors that they had been tortured while on the show.

Pratt and Montag were married in Pasadena, California on April 25, 2009. Pratt was baptised by Stephen Baldwin during his stint on the show I'm a Celebrity... Get Me out of Here!. Recently Spencer and his wife spoke publicly about the 9/11 attacks being an inside job. Spencer expressed regret that he has contributed to pop culture in a way that distracted people from important issues, and vowed to use his celebrity to highlight important political issues facing society, specifically about the New World Order.