The veteran director and actor was known for films including Groundhog Day, Caddyshack, Analyze This and Analyze That, all four of which he wrote and directed, and notably for his role as Dr Egon Spengler in Ghostbusters.
Following the news, tributes have poured in from Ramis's friends and colleagues across Hollywood.
Deeply saddened to hear of the passing of my brilliant, gifted, funny friend, co-writer/performer and teacher Harold Ramis.
— Dan Aykroyd (@dan_aykroyd) February 24, 2014
Instead of Wednesday's comic, this is what will be put up. I'm sharing it now because reasons. Rip Harold Ramis :_( pic.twitter.com/bV8daK8PD2
— Ash Vickers (@Mega_Ashra) February 25, 2014
Sad to hear my friend Harold Ramis
passed away. A brilliant, funny, actor and
director. A wonderful husband and dad.
Big loss to us all. bc
— Billy Crystal (@BillyCrystal) February 24, 2014
Egon was my favourite Ghostbuster.