2009 | 6 Episodes

Season 1 of Who Do You Think You Are? premiered on March 24, 2009.

2009 | 5 Episodes

Season 2 of Who Do You Think You Are? premiered on November 23, 2009.

2010 | 5 Episodes

Season 3 of Who Do You Think You Are? premiered on November 9, 2010.

2011 | 8 Episodes

Season 4 of Who Do You Think You Are? premiered on September 6, 2011.

2012 | 7 Episodes

Season 5 of Who Do You Think You Are? premiered on August 27, 2012.

2013 | 7 Episodes

Season 6 of Who Do You Think You Are? premiered on September 23, 2013.

2014 | 6 Episodes

Season 7 of Who Do You Think You Are? premiered on August 25, 2014.

2015 | 6 Episodes

Season 8 of Who Do You Think You Are? premiered on August 24, 2015.

2016 | 6 Episodes

Season 9 of Who Do You Think You Are? premiered on August 29, 2016.

2021 | 8 Episodes

Season 10 of Who Do You Think You Are? premiered on September 1, 2021.