Does the cfl have any rule about uniform numbers?

Question

like, do quarterbacks have to wear #1 through #19, running backs #20 through #49 and etc.

Answer 1

Just about down field eligibility. Basically 1-49 and the 80's are eligible. Otherwise a player with a different number  needs to be declared eligible by the referee before the play.

Answer 2

yes they do have rules like that, mainly for who is eligible for being down the field,  offensive linemen have to stay in the 60s

Answer 3

No.  Basically, a player can wear any number that they want.  There are even a few receivers with numbers in the 70s, and they don't hafta be declared eligible on every play...

Answer 4

yes, numbers 0-39 and 70-99 are eligible recievers. Quaterbacks usually wear numbers below 20 but can wear any number. With an ineligible number you must report to the official in order to be considered eligible.