Bonham Carter played Bellatrix Lestrange in Harry Potter and the Order of the Phoenix , which was released in 2007 . She will continue to play Bellatrix Lestrange in the sixth and the seventh films : Harry Potter and the Half-Blood Prince , and Harry Potter and the Deathly Hallows . Bonham Carter played Bellatrix Lestrange in 2007 's Harry Potter and the Order of the Phoenix , 2009 's Harry Potter and the Half-Blood Prince , and the 2010 â `` 2011 film adaptations of Harry Potter and the Deathly Hallows .