Mackenzie Horras is a Los Angeles-based actor, writer and comedian. She was born and raised in Fairfield, Iowa – a tiny farming town known as the "world's largest training center" of Transcendental Meditation.

Mackenzie began acting at age seven. She began studying improvisational comedy at age 15. Mackenzie studied film and acting at Northwestern University (where she graduated with honors) and improv at I.O. Chicago.

Mackenzie is a graduate of the Upright Citizens Brigade Theatre and The Second City Conservatory. She has studied acting at The Beverly Hills Playhouse and under Lesly Kahn. Mackenzie has performed stand-up at The Comedy Store, UCB and The Hollywood Improv, among other stages. Mackenzie's Second City career has included a run of several shows, including Prom, The Martini Shot and The Mormon Family Variety Hour. Mackenzie currently writes and performs comedy with her sketch team Butter, which hosts a monthly comedy show at ACME Comedy Theatre in Los Angeles.

In addition to appearing onstage, Mackenzie creates her own content. Her acting, writing and directing work have appeared on the front pages of Funny or Die, College Humor and Comediva. Her work has been screened in The Berlin Independent Film Festival, The LA Comedy Shorts Festival and The Grand Rapids Film Festival, among dozens of others. In 2014, Mackenzie was a finalist in Funny Or Die's "Make Em Laff" contest for her video "A Mormon Coachella Survival Guide." Mackenzie's direction for "Ann Romney's I Love You Women Face Cream" garnered a "Best Tube-Length Video" award at the 2013 Best Shorts Festival.

Mackenzie currently plays Angela Goode in the web series Baked Goodes, on which she is also a writer and producer. Baked Goodes was named one of Newsweek's "best shows to watch this week" and was Decider.com's Afternoon Delight. Baked Goodes has also been featured on Stareable.com, Indieactivity, Scenester.tv and Reel Chicago, among other publications.

Mackenzie's web series Murder Show (written with Rebecca Hirsch) was a finalist in the 2017 Sundance Institute |  YouTube New Voices Lab.

In 2018, Mackenzie completed the Professional Program for Writing in Television at UCLA. Her comedy pilot Tammy’s Real Estate was named a second-round finalist at the Austin Film Festival.

Mackenzie’s comedy web series, Human Resources, (which she wrote, self-produced and starred in) is slated for release in mid-2019.