Dann moved to New York after college and became a member of the Acting Company at Juilliard.
Dann also collects music memorabilia.
Dann majored in math and physics at Eastern Michigan University.
Dann was the first person cast on Law & Order: Special Victims Unit. It was in fact his hiring that prompted the studio to change the show from its original title of Sex Crimes into a Law & Order spin-off.
Dann and his wife have three dogs, Maddie, Little Dog, and Greta.
Along with Jerry Orbach, Chris Noth and Fred Dalton Thompson, Dann Florek is one of four "Law & Order" cast members who later joined the regular cast of one of the spin-off series.
Dann's wife Karen is an artist.
He is an avid golfer and collects antique golf clubs.
He is the older brother of Dave Florek.
He was originally let go from Law & Order because producers were told they needed to add some female characters.
He is a Julliard trained musician.
He reprised his role of Captain Don Cragen from Law & Order on the spinoff Law & Order: Special Victims Unit.
Dann likes to golf in his spare time.