John Sackville

 is a British actor principally important to Doctor Who universe fiction for playing Randolph Wright, Polly's uncle, in the Big Finish Doctor Who audio story Resistance. He also portrayed Warren Gadd in the audio story Beautiful Things and read the audiobook of St Anthony's Fire.

His film and television career began at the start of the 21st century. He has had at least one role alongside another Doctor Who personnel — a guest spot in starring Felicity Kendal.