Bonnie Wright made her debut performance in Harry Potter and the Sorcerer's Stone (2001) as Ron Weasley's little sister Ginny Weasley. Bonnie tried out for the film due to her older brother Lewis mentioning she reminded him of Ginny. Her role in the first film was a small cameo like role as Ginny, having bigger part in the second film Harry Potter and the Chamber of Secrets (2002). After shooting the first Potter film, in 2002 Bonnie did the Hallmark television film Stranded (2002) playing Young Sarah Robinson. Then in 2004 after doing the Harry Potter and the Prisoner of Azkaban (2004) Bonnie was cast in Agatha Christie: A Life in Pictures (2004) , a BBC TV film as Young Agatha. Then Bonnie was back as Ginny Weasley for Harry Potter and the Goblet of Fire (2005), Harry Potter and the Order of the Phoenix (2007) and for Harry Potter and the Half-Blood Prince (2009) where her role turned supporting as Harry's love interest.
In 2007 she guest-voiced for Disney's TV series The Replacements (2006) as Vanessa. Also that time she voiced Ginny for Harry Potter and the Order of the Phoenix (2007) as well for Harry Potter and the Half-Blood Prince (2009) in 2009.
While shooting for Harry Potter and the Deathly Hallows: Part 1 (2010), Bonnie was cast as Mia for Geography of the Heart (2014) a feature-length film shot in five international locations about the complexity of love. Bonnie's segment was shot in December 2009 in London. Also during that time and shooting for Harry Potter and the Deathly Hallows: Part 2 (2011) Bonnie was attending London College of Communication to study film.
In 2011 Bonnie starred in After the Dark (2013), with James D'Arcy, Daryl Sabara and with Harry Potter co-star Freddie Stroma.
Bonnie also wrote and directed a short film for school called Separate We Come, Separate We Go (2012) starring Potter co-star David Thewlis.