Christina Machamer (born March 13, 1982) is an American chef who won in the fourth season of Fox Network's reality cooking show Hell's Kitchen.

[10] As of early 2009, Machamer was the executive sous chef at the London West Hollywood restaurant, where she worked nearly 14 hours a day and was also charged with supervising the kitchen's various stations.

She and Hell's Kitchen season 3 winner Rock Harper competed in a cookoff,[11] and both were among those who presented at the 2009 Scottsdale Culinary Festival in Arizona.

After Gordon Ramsay at The London in West Hollywood was sold back to LXR hotels, Machamer traveled to Napa to study wine at CIA Greystone in St. Helena, California.

[12] Shortly after, she returned to Los Angeles to be part of the opening team at Bouchon in Beverly Hills for celebrated chef Thomas Keller.

With the winner of Hell's Kitchen season 12, Scott Commings, Machamer briefly appeared in the 16th-season premiere of the show (in 2016) as a guest, during the red team's challenge reward (a dinner with Ramsay).