Danielle Jane Harmer (born 8 February 1989) is an English actress, television personality and former singer.
She is best known for her portrayal as Tracy Beaker in the CBBC series The Story of Tracy Beaker (2002–2005), Tracy Beaker Returns (2010–2012) and Tracy Beaker Survival Files (2011–2012).
She also appeared in the BBC series, After You've Gone (2007–2008).
Harmer starred in her own CBBC sitcom, Dani's House (2008–2012) and its spin-off series Dani's Castle (2013–2014).
She occasionally presented Friday Download and continuity clips on the CBBC Channel.
In 2008, Harmer branched into the music business and signed a £3m record deal with Universal Music Group.
She recorded her debut album Superheroes in September 2009, and released the single and theme from Dani's House, "Free", but the album was never released and it was later confirmed she had abandoned her music career.
In March 2012, Harmer appeared in Let's Dance for Sport Relief, alongside Tyger Drew-Honey.
They both reached the final, and became joint runners-up.
She also appeared in the tenth series of the BBC ballroom dancing show, Strictly Come Dancing.
She was paired up with Vincent Simone and they both reached the grand final, finishing in fourth place.