Amy Davidson (born September 15, 1979 in Phoenix, Arizona) is an American actress, best known for her role as Kerry Hennessy in 8 Simple Rules. Although her character on 8 Simple Rules is younger than her on screen sister (played by Kaley Cuoco), Davidson is in reality, six years older than Cuoco. A native of Phoenix, Arizona, Amy began doing commercial work and her acting coach Gene Fowler encouraged her to move to Los Angeles, California at a young age. Upon arriving in Los Angeles, Amy was cast in the Mary-Kate and Ashley Olsen series, So Little Time. She has also guest-starred on the drama series Judging Amy, and appeared in the movie The Truth About Jane. Most recently, Amy wrapped production on the Hallmark Channel original movie Annie's Point, opposite Betty White and Richard Thomas.

Amy attended Shadow Mountain High School. Her dad is a principal at El Mirage elementary school. Amy began doing commercial work and her acting coach Gene Fowler encouraged her to move to Los Angeles, California at a young age.Amy was not only cast on many shows with Kaley Cuoco but also is her step cousin and they also share the same agent, Terry Louisse Machlaclan.

Upon arriving in Los Angeles, Amy was cast in the Mary-Kate and Ashley Olsen series, So Little Time. She has also guest-starred on the drama series Judging Amy and the American sitcom Malcolm In The Middle, and has appeared in the movie The Truth About Jane. Most recently, Amy wrapped production on the Hallmark Channel movie Annie's Point, opposite Betty White and Richard Thomas. She judged Animal Planet's show. Davidson is currently filming the movie Goyband in which she stars as a young Orthodox Jewish girl who falls for an ex-boyband pop star (Adam Pascal) who performs at her family's kosher hotel in the Catskills. Goyband's cast includes Natasha Lyonne, Tovah Feldshuh, Dean Edwards, Tibor Feldman and Cris Judd.

• Goyband (2009) (completed) .... Rebekka
  
• "The Capture of the Green River Killer" (2008) TV mini-series .... Helen 'Hel' Remus
• "CSI: NY" .... Carolyn (1 episode, 2007)
       - Past Imperfect (2007) TV episode .... Carolyn
• Netherbeast Incorporated (2007) .... Pearl Stricklett
• "Malcolm in the Middle" .... Malcolms Dance Partner / ... (2 episodes, 2006)
       - Bomb Shelter (2006) TV episode .... Malcolms Dance Partner
       - Lois Strikes Back (2006) TV episode .... Paula
• "Strong Medicine" .... Jamie (1 episode, 2006)
       - Baby BOOM! (2006) TV episode .... Jamie
• "8 Simple Rules... for Dating My Teenage Daughter" .... Kerry Hennessy (76 episodes, 2002-2005)
  ... aka 8 Simple Rules (USA: new title)
       - Ditch Day (2005) TV episode .... Kerry Hennessy
       - Sleepover (2005) TV episode .... Kerry Hennessy
       - The Teachers Lounge (2005) TV episode .... Kerry Hennessy
       - The After Party (2005) TV episode .... Kerry Hennessy
       - C.J.'s Real Dad (2005) TV episode .... Kerry Hennessy
        (71 more)
• "Brandy & Mr. Whiskers" .... Tiffany Turlington (1 episode, 2005)
       - One of a Kind (2005) TV episode (voice) .... Tiffany Turlington
• Annie's Point (2005) (TV) .... Ella Eason
• "The New Tom Green Show" (1 episode, 2003)
       - Episode dated 18 July 2003 (2003) TV episode
• "So Little Time" .... Cammie Morton (6 episodes, 2001-2002)
       - Sweet 16 (2002) TV episode .... Cammie Morton
       - The Volunteer (2002) TV episode .... Cammie Morton
       - The Flat Tire (2002) TV episode .... Cammie Morton
       - The Job (2002) TV episode .... Cammie Morton
       - The Massage (2002) TV episode .... Cammie Morton
        (1 more)
• "Judging Amy" .... Lindsey Sandowski (1 episode, 2001)
       - Look Closer (2001) TV episode .... Lindsey Sandowski
• The Truth About Jane (2000) (TV) .... Elizabeth