
Amanda Joy Michalka (born April 10, 1991) is an American actress, voice actress, singer, and musician.
She is best known as one half of the musical duo Aly & AJ (briefly 78violet), alongside her sister Aly Michalka. She has appeared in films such as The Lovely Bones (2008), Secretariat (2010), Super 8 (2011), Grace Unplugged (2013), Weepah Way for Now (2015), and Support the Girls (2018). Michalka also starred in the ABC sitcom The Goldbergs (2013–present) and its spin-off series Schooled (2019–2020). She is also known for voicing a lead role as Catra in the Netflix animated adventure series She-Ra and the Princesses of Power (2018–2020).

Super 8
2011 · as Jen Kaznyk

The Lovely Bones
2009 · as Clarissa

Ray Donovan: The Movie
2022 · as Young Abby

Secretariat
2010 · as Kate Tweedy

Grace Unplugged
2013 · as Gracie Trey

Cow Belles
2006 · as Courtney Callum

Dirty Lies
2016 · as Tiffiny

Support the Girls
2018 · as Krista

Apple of My Eye
2017 · as Kai

Expecting Amish
2014 · as Hannah

Salem Falls
2011 · as Gillian Duncan (as AJ Michalka)

Angels in Stardust
2014 · as Vallie Sue

The Goldbergs: An '80s Rewind
2016 · as Herself / Lainey Lewis

Super Sweet 16: The Movie
2007 · as Sarah

Walt Disney World Christmas Day Parade
2006 · as Self

Walt Disney World Christmas Day Parade
2005 · as Self

Weepah Way For Now
2015 · as Joy

Slow Moe
2010 · as Emily Phillips