|Img Capt:||Amanda Michalka in concert, August 2007.|
|Birth Name:||Amanda Joy Michalka|
|Born:||1991 4, mf=yes|
|Occupation:||Actress, singer, songwriter, guitarist|
|Genre:||Acoustic rock, pop, pop rock, electro-pop|
|Years Active:||2001 — present|
|Instrument:||Vocals, guitar, piano|
|Label:||Hollywood (2004 - present)|
Amanda Joy Michalka, (born April 10, 1991) often credited as AJ, is an American actress and singer-songwriter. She used to be a model prior to becoming an actress, and is known as one-half of the duo Aly & AJ with her sister, Alyson Michalka.
AJ was in a number of musical productions at her school in Milwaukee as a young adult. AJ plays a variety of instruments such as acoustic guitar, electric guitar, piano, and bongos. She was a model for catalogs. In March 2006, she made her Disney Channel debut in the Disney Channel Original Movie Cow Belles, as "Courtney Callum", along with sister Aly, as "Taylor Callum". She has also made appearances on shows such as Oliver Beene, Six Feet Under, The Guardian, and General Hospital.    She has also appeared with her sister, Aly, in the MTV movie, .
In 2008, she is featured in the upcoming Peter Jackson film The Lovely Bones, which is set to be released December 11, 2009, , while her sister has a lead role in the movie Bandslam, due July 31, 2009. Aside from this, she and her sister, as Aly & AJ, are working on a new album, to be released in the summer of 2009.
|rowspan=2||2002||Passions||Sheridan's Daughter||1 episode|
|Birds of Prey||Young Dinah||2 episodes|
|2002 - 2004||The Guardian||Shannon Gressle||Season 2 - 3 (15 episodes)|
|2003 - 2004||Oliver Beene||Bonnie||Season 1 - 2 (8 episodes)|
|rowspan=2||2004||General Hospital||Ashley B.||3 episodes|
|Six Feet Under||Ashley||2 episodes|
|rowspan=2||2006||Haversham Hall||Sam Tillar||Pilot was filmed, but was cancelled before airing.|
|Cow Belles||Courtney Callum||made for television (Disney Channel)|
|2007||Sara Connors||made for television (MTV Films)|
|2009||The Lovely Bones||Clarissa||Post-production|