How many players needed on the Basketball court?

5 players are allowed on the court at a time. For a team you can have from 5-as many as you want. Of course if you only have 5 players it will become very tiring, that's why it would probably be smart to have more than that.

Unless you're playing a random pick-up game. You can as many as you want for that. a one on one, two on two, three on three andd so on.