Season
- Season 0 2006-12-06
- Season 1 2003-09-11
- Season 2 2004-10-08
- Season 3 2005-09-30
- Season 4 2006-09-29
- Season 5 2007-09-21
- Season 6 2008-11-14
- Season 7 2009-11-26
- Season 8 2010-09-17
- Season 9 2011-09-09
- Season 10 2012-09-14
- Season 11 2013-09-06
- Season 12 2014-10-03
- Season 13 2015-10-16
- Season 14 2016-10-21
- Season 15 2017-10-20
- Season 16 2018-09-10
- Season 17 2019-09-06
- Season 18 2020-05-27
- Season 19 2021-09-09
- Season 20 2022-11-11
- Season 21 2023-12-18
- Season 22 2024-10-22
Season 22 Episode
- Season 4 Danger
- Season 4 Discoveries
- Season 4 Dogs
- Season 4 Dictionaries
- Season 4 Death (Halloween Special)
- Season 4 Drinks
- Season 4 Differences
- Season 4 Descendants (Children in Need Special)
- Season 4 Doves
- Season 4 Divination
- Season 4 Deprivation
- Season 4 Domesticity
- Season 4 December (Christmas Special)
QI - Season 4 Episode 3 Dogs
7.90 30 minutes Stephen Fry, Alan Davies, Neil Mullarkey, Jeremy Clarkson and Liza Tarbuck discuss quite interesting topics beginning with 'D', particularly 'Dogs'.
