It's the most wonderful time of the year. No, not Christmas -- National Pizza Day. While none of the big franchises seem to have announced national deals for Monday's holiday, that won't keep hungry Americans from celebrating. Smaller chains like Fired Pie in Arizona, Michael's Pizzeria in California and some CiCi's Pizza locations are offering one-day-only buy one, get one free deals.

In order to buy cheap pizza from the top three companies,  you'll have to fall back on standard online promo codes. Try the below coupons for a shot at a discount. If one doesn't work, keep plugging in others -- they may vary by location.

Papa John's deals from Retail Me Not and Coupon Follow:

  • RETAIL25, 25OFF and 25VISA get you 25 percent off regular-price items.
  • GB30 gives you 30 percent off.
  • F26FREEBIE gives you free cheesesticks with a large specialty pizza.
  • POST3M gets you three medium, three-topping pizzas for $21 total.
  • 6BRWN gives you a double chocolate chip brownie for $6.

Pizza Hut deals from Retail Me Not and Slick Deals:

  • TEOMED3T6 gets you any medium, three-topping pizza for $6.
  • ELEVENONLINE gives you any medium or large pizza with up to five toppings for $11. 
  • 10BOX gets you a one-topping pizza, five breadsticks and 10 cinnamon sticks for $10.
  • 3T gives you two medium pizzas, breadsticks and cinnamon sticks for $20.
  • Sign up for a new email account, and you'll get free cheesesticks.

Domino's Pizza deals from Retail Me Not and Deal Catcher:

  • 9193 gets you two of the following for $5.99 each: medium, two-topping pizza; oven-baked sandwich; cheesy bread; eight-piece chicken; pasta dish.
  • 9204 gives you two medium pan pizzas for $8.99 each.
  • 9174 gives you any large pizza with up to three toppings for $7.99 (carry-out only).
  • Sign up for a new email account, and the company will send you special offers.