The table below is compiled from many sources. The table lists trumpet players and the Conn horn they play. Some players play more than one brand.  The list is sorted by brand.  Interesting stuff.

Conn Pee Wee Erwin Conn
Conn Mannie Klein Conn
Conn Stan Mark Conn
Conn Doc Severinsen Conn
Conn Harry Freistadt Conn
Conn Red Nichols Conn
Conn Bill Coleman Conn 10B
Conn Bunny Berigan Conn 12 B
Conn Bob Hunt Conn 22B
Conn Edward H. Tarr Conn 22B
Conn Hot Lips Page Conn 22B or 12 B
Conn Harry Glantz Conn 2B
Conn W. C. Handy Conn 2B
Conn Fats Navarro Conn 2B
Conn Jan Marinus Conn 38B
Conn Greg Reese Conn 38B
Conn Cootie Williams Conn 40B
Conn Lammar Wright Conn 40B
Conn Erskine Hawkins Conn 40B
Conn Bob Hunt Conn 40B
Conn Charlie Shavers Conn 48B
Conn Louis Armstrong Conn 56B
Conn Freddy Jenkins Conn 58 B
Conn Roy Eldridge Conn 60 B
Conn Reunald Jones Conn 60B
Conn Robbie Kwock Conn 60B
Conn Charles Tolliver Conn 60B
Conn Bob Hunt Conn 80A
Conn Lee Morgan Conn 8B Artist
Conn Frankie Newton Conn 8B Symphony Grand
Conn Phil Napoleon Conn 8B
Conn Charlie Spivak Conn 8B
Conn Freddie Hubbard Conn Artist 8B
Conn Carmell Jones Conn Connstellation
Conn Bert Lochs Conn Connstellation
Conn Joe Marcinkiewicz Conn Connstellation
Conn Jeremy Pelt Conn Connstellation
Conn Valery Ponomarev Conn Connstellation
Conn Jim Rotondi Conn Connstellation
Conn Mike Vax Conn Connstellation
Conn Cootie Williams Conn Connstellation
Conn Dontae Winslow Conn Connstellation
Conn George Swift Conn Conquerer conical bore rimless bell
Conn Maynard Ferguson Conn Constellation
Conn Tony Fisher Conn Constellation
Conn Roger Ingram Conn Constellation
Conn Blue Mitchell Conn Constellation
Conn Woody Shaw Conn Constellation
Conn Cat Anderson Conn Constellation 38 B
Conn Chet Baker Conn Constellation 38B
Conn Harry Glantz Conn Glantz Model C
Conn Anders Bergcrantz Conn Victor 6b
Conn Wild Bill Davison Conn Victor 80A
Conn Rick Baptist Conn Vintage One
Conn Carl Saunders Conn Vintage One
Conn Warren Vache Conn Vintage One
Conn Bob Hunt Conn Vintage One 1B
Conn Freddy Jenkins Conn Vocabell 40 B
Conn Henry Red Allen Conn Vocabell 40B
Conn Paul Mares Conn Vocabell 40B
Conn Henry Red Allen Conn Vocabell 48B
Conn Don Jacoby Conn
Conn Valery Ponomarev Conn Connstellation
Conn Benny Carter Conn