Over the years there have been alot of addistants/ compainions to the doctor. so this is going to be along list.
First Doctor:
Susan Foreman (doctors granddaughter) played by Carole Ann Ford
Barbara Wright played by Jacqueline Hill
Ian Chesterton played by William Russell
Vicki played by Maureen O'Brien
Steven Taylor played by Peter Purvess
Katarina played by Adrienne Hill
Dodo Chaplet played by Jackie Lane
Polly PLayed by Anneke Wills
Ben Jackson played by Micheal Craze
Second Doctor
Polly PLayed by Anneke Wills
Ben Jackson played by Micheal Craze
Jamie McCimmon played by Frazer Hines
Victoria Waterfield played by Deborah Watling
Zoe Heriot played by Wendy Padbury
Brigadier Lethbridge-Stewart played by Nicholas Courtney
Third Doctor
Liz Shaw played by Caroline John
Jo Grant played by Katy Manning
Sarah-Jane Smith played by Elisabeth Sladen
Forth Doctor
Sarah-Jane Smith played by Elisabeth Sladen
Harry Sullivan played by Ian Marter
Leela played by Louise Jameson
K-9 Mark I voiced by John Leeson
K-9 Mark II voiced by John Leeson and David Brierley
Romana I played by Mary Tamm
Romana II played by Lalla Ward
Adric played by Matthew Waterhouse
Nyssa played by Sarah Sutton
Tegan Jovanka played by Janet Feilding
Fifth Doctor
Adric played by Matthew Waterhouse
Nyssa played by Sarah Sutton
Tegan Jovanka played by Janet Feilding
Vislor Turlough played by Mark Strickston
Kamelion voiced by Gerald Flood
Peri Brown played by Nicola Bryant
Sixth Doctor
Peri Brown played by Nicola Bryant
Melanie 'Mel' Bush played by Bonnie Langford
Seventh Doctor
Melanie 'Mel' Bush played by Bonnie Langford
Ace played Sophie Aldred
Eighth Doctor
Grace Holloway played by Daphne Ashbrook
Ninth Doctor
Rose Tyler played by Billie Piper
Captian Jack Harkness played by John Barrowman
Tenth Doctor
Rose Tyler played by Billie Piper
Captian Jack Harkness played by John Barrowman
Micky Smith played by Noel Clarke
Martha Jones played by Freema Agyeman
Donna Noble played by Catherine Tate
Eleventh Doctor
Amy Pond played by Karen Gillen
Rory Williams played by Arthur Darvill