Restaurants Offering Free Food promotions on your birthday:

(Please verify with the restaurant in your area to make sure, though!)

ALFY'S PIZZA - free mini pizza
ALL-AMERICAN CAFE - free dessert
APPLEBEES - free dessert
AUSTIN GRILL - Register First - free meal
BAKERS SQUARE - free pie
BANDIDO'S - free entree
BANJARA INDIAN CUISINE - free meal
BASKIN ROBBINS - free ice cream treat
BENIHANA'S JAPANESE RESTAURANT - free dinner WITH 3 other paying guests ( Verify first with your local )
BENNIGANS - free dessert + song
BERN'S - free meal
BILL KNAPP'S - gives adults a % discount equal to age; plus a free bday cake (w/purchase of a meal) during the week of your B-day
BLACK BRISKEE - free meal
BOB'S BIG BOY - free hot fudge ice cream
BRUSTER'S - free waffle cone on your birthday 
BURGER KING - free kids meal to all kids club members
CALIFORNIA PIZZA KITCHEN - Register First - free kids meal during the month of their birthday
CAPTAIN D'S BIRTHDAY CLUB - free two-piece meal at sign-up and once a year on your birthday
CAPTAIN DIZZY'S CAR WASH - free car wash
CARROWS - free cake
CATTLEMEN'S - free dessert and cowboy hat
CHARLIE BROWNS RESTAURANTS - free meal for "Handshake Club" members
CHARLIE'S SEAFOOD - free meal
CHEVY'S - free dessert and sombrero
CHILI'S - free desert on your birthday
CHIPS N GIGGLES - free meal
CLAIM JUMPER - Free Dessert
CROWN THEATRES - Buy One Movie Ticket, Get One Free
CRAZY BUFFET - free meal
DAVE AND BUSTERS - $5 game card credit
DENNY'S - free meal (said to be only kids under 10 now)
DESPARADOS MEXICAN RESTAURANT - free meal
DOCKSIDE RESTAURANT - free meal
DUKE'S CHOWDER HOUSE - b1g1 coupons (register first). FREE dinner for your birthday!
EL CHICOS - free dessert
ERNIE'S STEAKHOUSE - free meal
FIREHOUSE SUBS - free sub (must sign up for birthday club)
FUDDRUCKERS - free burger
FUNNY BONE COMEDY CLUB - free cake (party of 5 min.; 2 drink min.)
GRILLFISH - free meal
HANA JAPAN - free meal
HARD ROCK CAFE - free dessert
HOMETOWN BUFFET - free birthday cake
HOULIHAN'S RESTAURANT - free entree
HOLLYWOOD VIDEO - one free video rental
HOOTERS - free song + tshirt
HOSS'S STEAK HOUSE AND RESTAURANT - free cake + song
IHOP- free meal
JOE'S CRAB SHACK - free cake
JT WHEATFIELDS - free coupon in phone book
KING BUFFET - free meal
LADONNA - free meal
LOMBARDI'S IN BALLARD - Register First - free meal w/another during month of birthday
LOTUS - free meal
LUTHERS BBQ - free stuff (varies) for "Great Rewards" members
MACARONI GRILL - free dessert + OPERA-style "Happy birthday" song
MAGGIANOS - $10 Off purchase of $20 (sign up in advance)
MARIE CALENDERS - free dessert
MAX AND ERMA - free $5 dessert
MEXICAN VILLAGE - free meal
MOONIES DINER - free meal
MUCKLESHOOT CASINO - free sushi dinner + player's club points
NEWICK'S SEAFOOD RESTAURANTS - free entree
NITTY GRITTY - free drink + souvenir glass
OKAYAMA RESTAURANT - free meal
OLD SPAGHETTI WAREHOUSE - free meal
ONAMI - free dinner WITH 3 other people paying
OUTBACK Steakhouse - free dessert + song
PANCAKE HOUSE - free entree
PAPPA'S RESTAURANTS - free dessert
PARADISO'S - free meal
PERKIN'S - free stack of pancakes
PF CHANGS - free cake or cheesecake
PIZZA EXPRESS - free meal
PONCHO'S - free meal, dessert & picture
PROVINO'S ITALIAN RESTAURANT - free $10.99 meal and ice cream dessert
Radisson - free entree in their 12th floor restaurant
REAL SEAFOOD COMPANY - free meal and dessert
RED ROBINS - Register First - free burger coupon / discount coupon
RICE & COMPANY - free meal for Robinson Rewards Club members
ROCK BOTTOM - free appetizer for Mug Club members
ROUND TABLE - free personal pizza
RUBY TUESDAY - free burger and fries (must sign up for their newsletter to receive this offer)
SCALINI'S ITALIAN RESTAURANT - up to 10.95 off pasta specialties
SHEPARD'S BUFFET - free dinner buffet w/3 other paid customers
STEAK AND ALE - free mini choco cake
STEAK-N-SHAKE - free dinner for "birthday club" kids
TGI FRIDAYS - Free birthday Dessert
THE 99 - free meal
THE BARNSIDER'S/DEPOT RESTAURANTS - 1/2 off meal + cake & song
THE LOFT - free meal
THE PALM - 3lb lobster (must be a member/register first)
THE PARADISO - free entree + sombrero & song
THE VINE TAVERN - free meal
TODAI SEAFOOD BUFFET - Free Meal or voucher for Meal Next Visit
TONY ROMA'S - free dessert, free meal
UP THE CREEK - free meal and dessert
VACCARO'S ITALIAN PASTRY SHOP - free dessert and drink
WENDY'S - free kids meal to all kids club members
Z' TEJAS - Register First - $15 coupon for the month of your birthday
ZIO'S - free dessert mini pizza


Source: FreeBirthday.com