Who Do You Think You Are?

Season 1

10 episodes · 2004

Season 2

6 episodes · 2006

Season 3

8 episodes · 2006

Season 4

7 episodes · 2007

Season 5

8 episodes · 2008

Season 6

11 episodes · 2009

Season 7

9 episodes · 2010

Season 8

10 episodes · 2011

Season 9

10 episodes · 2012

Season 10

10 episodes · 2013

Season 11

10 episodes · 2014

Season 12

10 episodes · 2015

Season 13

10 episodes · 2016

Season 14

10 episodes · 2017

Season 15

8 episodes · 2018

Season 16

8 episodes · 2019

Season 17

4 episodes · 2020

Season 18

7 episodes · 2021

Series 19

5 episodes · 2022

Series 20

9 episodes · 2023

Series 21

7 episodes · 2024

Series 22

8 episodes · 2025

Series 23

8 episodes · 2026