Myfanwy Talog (Welsh pronunciation: [məˈvanuɨ ˈtalɔɡ]; born Myfanwy Talog Williams; 31 March 1944 – 11 March 1995) was a Welshactress and the long-term partner of English actor Sir David Jason.
She was born in Caerwys, Flintshire in 1944, where a plaque can now be seen on the house where she was born. She worked as a teacher before taking up an acting career, and appeared mainly on Welsh language television, in comedy and children's programmes. For audiences in Wales, she played the character of Phyllis Doris, the teenaged daughter of the family in the series Ryan and Ronnie.
She later appeared in several English-language sitcoms and soap operas. She lived with David Jason for eighteen years until her death from breast cancer, and accompanied him to Buckingham Palace in 1993 to receive his OBE.
On television, Talog narrated Will Quack Quack and voiced The Two Girls in the SuperTed episode, SuperTed and the Pothole Rescue for S4C and Siriol Productions. She did voice work on Alias the Jester and The BFG She voiced Mrs. Clonkers (with David Jason voicing the BFG) for Cosgrove Hall.
- Will Quack Quack (1982-1987) - Narrator
- SuperTed (1982-1985) - The Two Girls
- Alias the Jester (1985-1986) - Princess Amaranth
- Oliver (1988) - Additional voices
- The BFG (1989) - Mrs. Clonkers