Rosalind Eleazar (born 29 August 1988) is an English stage and screen actress. She is best known for her roles as Louisa Guy in the TV series Slow Horses, as Agnes in 2019 film The Personal History of David Copperfield, and as the lead character Kat in Harlen Coben's 2025 miniseries Missing You.
Eleazar's mother is British; her father was Ghanaian.
She attended Gordonstoun School in Moray, Scotland and then trained at the London Academy of Music and Dramatic Art, graduating in 2015. Prior to this, she also studied Chinese and Spanish at the University of Nottingham.
Eleazar's TV roles include Louisa Guy in Slow Horses, Christine in the BBC series Rellik, Jacky Bast in Howards End, Kate in the ITV series Deep Water, as well as roles in NW, National Treasure and Harlots.
On stage, Eleazar appeared in The Starry Messenger at Wyndham's Theatre; as Yelena, in Uncle Vanya at the Harold Pinter Theatre;
Eleazar's debut feature film role was as Agnes in The Personal History of David Copperfield (2019) by Armando Iannucci.