They can be called:
Please feel free to add your answer
In the United States they are referred to as bettors. In most other parts of the world such as the United Kingdom or Australia, they are referred to as Punters.
A gambler or bettor.
Punters
A "punter"
bookmaker
Teller
A wager is either something deposited as a bet, or something on which bets are laid.
You call them 'The person I owe money to'
Not that I've ever heard. All bets are not winners - most bets lose the money.
Punter
umm by phone or if the question is meant to be (waht do you call a person with a lot of money) that answer is rich
Bettor --- a person who bets.
gambler
Place bets are in a separate pool from win bets so there is no fixed payout for an even-money favorite.
Poor
The pot.
of cci in cricket