儘管大部分的參與作品是以電影和電視劇為主，但身為一名舞台演員，艾塞克同樣也演出過數部舞台劇，著名作包括在迪克蘭‧唐納倫執導的戲劇《天使在美國》第一部「千禧年降臨」（Millennium Approaches，1992年）和第二部「重建」（Perestroika，1993年）裡演出的路易·愛恩森（Louis Ironson）、及2007年在特拉法加工作室演出的《送菜升降机》50週年改編版。他也從2012年的3月到5月間，在美國國家廣播公司（NBC）的電視劇《異度覺醒》裡演出主角布里頓警探（Michael Britten）。
- Jasper Rees. 'There is a streak of cruelty in me': Actor Jason Isaacs Says Life Prepared Him to Become a Specialist in Unattractive Characters. The Daily Telegraph, Review. 27 January 2007 [27 June 2008].
The way he tells it, Isaacs's career is a big mistake. He grew up in Liverpool, then London, went to Bristol University to read law and felt uneasy among peers 'who all sounded like Hugh Grant'. He signed up for the drama society when he saw an audition for a part with 'Northern accent required'. ... He applied to drama schools with no intention of going. But the rather stern admissions tutor who offered him a place at Central School of Speech and Drama in London took umbrage at his vacillation. 'She said, "This is a vocation. If you're not interested, tell me now." I was so English and too embarrassed to tell her the truth.'
- Rebecca Flint Marx. Jason Isaacs: Biography. Allmovie (Moviefone). [29 June 2008]. （原始内容存档于2008年12月18日）.
Although he first became interested in acting in part because 'it was a great way to meet girls,' Isaacs soon found deeper meaning in the theatre (in one interview he was quoted as saying 'I could release myself into acting in a way that I was not released socially') and duly dropped out of Bristol to hone his skills at London's Central School of Speech and Drama.
- Biography for Jason Isaacs. Internet Movie Database. [25 June 2008]. [Includes unsourced "Personal Quotes".]
- Jason Isaacs: Other Works. Internet Movie Database. [25 June 2008].
- NT: Archive: Stage by Stage: 1992–1995. Royal National Theatre. nationaltheatre.org.uk. [25 June 2008]. （原始内容存档于2008年12月7日）.
- Sonia Friedman Productions. Dumb Waiter Limited Run. Sonia Friedman Productions press release. 3 January 2007 [23 June 2008].
Strictly limited run: Lee Evans and Jason Isaacs to star in major revival of Harold Pinter's The Dumb Waiter directed by Harry Burton ... To coincide with the play's 50th anniversary....
- Jasper Rees. 'There is a streak of cruelty in me': Actor Jason Isaacs Says Life Prepared Him to Become a Specialist in Unattractive Characters. The Daily Telegraph, Review. 27 January 2007 [18 March 2012]. （原始内容存档于2008年12月7日）.
The more cheery and pliant of the two [Gus] is played by Lee Evans, the more menacing [Ben] by Isaacs. Characteristically. 'Far from what you would think,' [Isaacs] says, 'Lee is the one who went to art school and is familiar with Beckett and Pinter. I wasn't going to do this until I read it. It is crackingly funny. I realised how much of a debt Tarantino owes. The Pinter scholars can go off and discuss whatever they like in dusty rooms, but Lee and I and Harry Burton, the director, are trying to come up with something really engaging and exciting. It's never been more relevant. The whole play exists on this undercurrent of fear and paranoia. It's a very scary time to live in the world, and these two guys are in a room scared and working out what to do about it.'
- Caroline Ansdell. Review Round-up: Critics Find Waiter Not So Dumb..
- Jason Isaacs 在互聯網電影數據庫（IMDb）上的資料（英文）. Retrieved 23 June 2008. [Includes unsourced "Personal Quotes".]
- Jason Isaacs Biography. Yahoo! Movies UK & Ireland. uk.movies.yahoo.com. 2006 [24 June 2008]. （原始内容存档于2007年8月25日）.
- Marx, Rebecca Flint. Jason Isaacs: Biography. Moviefone. [23 June 2008]. （原始内容存档于2008年12月18日）.
- Jason Isaacs Video Interview. The London Paper. thelondonpaper.com. [27 June 2008]. （原始内容存档于2008年12月7日）. [Filmed on the set of Brotherhood; includes Isaacs' demonstration of a magic trick.]
- Mark Kermode v Jason Isaacs on Johnny Depp. BBC Radio 5 Live. 16 April 2008 [17 August 2008].
- Lester, Paul. JC interview: Jason Isaacs. The Jewish Chronicle (thejc.com). 1 February 2008 [29 June 2008]. （原始内容存档于2008年2月4日）.
- Mitovich, Matt Webb. Interviews & Features: Jason Isaacs: More Than a Bad Brother. TV Guide (TVGuide.com). 21 July 2006 [24 June 2008]. （原始内容存档于20 October 2008）.
- Hootie & the Blowfish. 2005 Monday After the Masters Celebrity Pro-Am Golf Tournament Sets Record with $425,000 in Donations. Press Release (hootiegolf.com). 19 December 2005 [1 July 2008]. （原始内容存档于2006年4月27日）. ["Players: See Past Participants."]
- Pfefferman, Naomi. More Than a Villain: With "The Patriot," Jason Isaacs, a British Jew, Cements His Reputation as One of Hollywood's Hottest Heavies. The Jewish Journal of Greater Los Angeles (jewishjournal.com). 30 June 2000 [29 June 2008].
- –. Once a 'wimp,' Actor Thrives On Portraying Villains. The Jewish News of Greater Phoenix (jewishaz.com). 14 July 2000 [29 June 2008]. （原始内容存档于2008年12月10日）.
- Rees, Jasper. 'There is a streak of cruelty in me': Jason Isaacs Says Life Prepared Him to Become a Specialist in Unattractive Characters. The Daily Telegraph, Review. 27 January 2007 [18 March 2012]. （原始内容存档于2008年12月7日）.