Denis Lill (born 22 April 1942) is a New Zealand-born British actor.
[]
- 1983 - Agatha Christie's Partners in Crime, The Sunningdale Mystery as Hollaby Junior
- 1993 - Agatha Christie's Poirot, The Underdog as Sir Reuben
- 2008 - And Then There Were None (Agatha Christie Theatre Company production) as William Blore
- 2009 - Spider's Web (Agatha Christie Theatre Company production) as Inspector Lord
- 2010 - Witness for the Prosecution (Agatha Christie Theatre Company production) as Sir Wilfrid Robarts
- 2012 - Murder on the Nile/Hidden Horizon (Agatha Christie Theatre Company production) as Canon Ambrose Pennyfather
- 2017 - Crooked House as Doctor