Gillian Wright is an English actress, known for portraying the role of Jean Slater on the BBC soap opera EastEnders since 2004, for which she has won numerous awards. She previously worked as a drama teacher and a theatre director before occupying acting roles.

Jean Slater is a fictional character from the BBC soap opera EastEnders, played by Gillian Wright. Her first appearance is in the episode first broadcast in the United Kingdom on 16 December 2004. Having only been introduced for one episode, Wright was reintroduced for four more episodes the following year and became more of a regular character in the following two years. The character is introduced as the mother of Stacey Slater who suffers with bipolar disorder. Her disorder strains her relationship with her children, Stacey and Sean Slater. Wright researched the disorder to prepare for the role. In April 2010, it was announced that Jean would be written out of the series, however, Wright was awarded a reprieve in late 2010. Jean departed on 13 January 2011 and returned on 29 March 2011. Wright announced her intentions to leave the series in July 2013, and Jean departed on 17 September 2013. Following her departure, Wright reprised the role for 15 episodes between 2014 and 2017. In December 2017, it was announced that Jean would be reintroduced as a regular character, along with Kat Slater and Mo Harris. She returned on 20 March 2018. On 11 December 2023, Wright appeared in her 1,000th episode as Jean.