Jemima Rebecca "Jemma" Redgrave is a British actress, and a member of the Redgrave family. She played the title character in four series of Bramwell, and has a recurring role in Doctor Who as Kate Stewart, Head of Scientific Research at UNIT. As well as a career in television, she has appeared in many stage productions and on film, including her portrayal of Evie Wilcox in the Merchant Ivory film Howards End.

The Redgrave family is a British acting dynasty, spanning five generations. Members of the family worked in theatre beginning in the nineteenth century, and later in film and television. Some family members have also written plays and books. Vanessa Redgrave is the most prominent, having won Oscar, Tony, Golden Globe and Emmy Awards.