Chef Jeff Black's restaurants have become a force in the oyster world with two signature oysters. At Black's Bar and Kitchen, Chesapeake Bay oysters are $2.25 and two for one during happy hour. Boutique oysters including those signature oysters, are $2.50, and premiums are $2.95.

Clyde's (Gallery Place, Tower Oaks and Tysons Corner) feature happy hours when all raw bar items are half price. Choose from a variety of platters with items such as oysters, Jonah crab claws, lobsters, shrimp, and littleneck clams, depending on location. The deals run 3 to 6 pm and 11 p.m.-1 a.m. at Clyde's of Gallery Place Sunday-Thursday. Clyde's of Tysons Corner happy hour is seven days a week from 3-6 p.m. and 10 p.m.-midnight. Hours vary by the day at Tower Oaks.

Old Ebbitt Grill is a great setting to enjoy half-off raw bar options, including oysters, seven days a week from 3 p.m.-6 p.m. and from 11 p.m. to closing.

J Paul's offers half-priced raw bar every Wednesday until closing, according to the restaurant's website.

Legal Seafoods might be a chain restaurant, but with respect to raw oysters it means a steady supply chain of great oysters. Get half a dozen for $6, Monday-Friday, from 4-7 p.m. They've also added a late night option: the deal is good 10 p.m. to close Monday through Thursday, and from 11 p.m. to close on Friday.

In the middle of pricey Georgetown, Sea Catch is a savior. Get $1 oysters and half price drinks during its happy hour, which runs Monday-Friday, 5-7 p.m.

Jeff Black's newest place, Republic, has $1 oysters during happy hour, along with discounted cocktails, beer and bar bites. Happy Hour is Monday-Friday 3-7 p.m.

Zentan has $1 War Shore and Battle Creek oysters during its Thursday happy hour from 3-7 p.m.

P.J. Clarke's offers $1 oysters at the bar daily during happy hour, 2:45-7 and after 10 p.m.. Additionally, sometime in April (when patio weather starts up), they will launch a steeper discount on Tuesdays, though they're still finalizing specifics.

Select oysters are $1 during happy hour at Senart's, which runs from 4-7 p.m.. Ask a server for details: there are sometimes other raw bar specials, too.

Trummer's has been offering half off Rappahannock River Oysters all night during some Fridays this winter.

Always ready with a great happy hour deal, Urbana features chef's choice oysters for $1 during happy hour, daily from 4-7 p.m.

Eat the Rich has $1 oysters (plus discounted beers) for its industry night happy hour, which runs 11 p.m. to close daily.

The Fish Market's happy hour runs Monday-Friday from 4-7 p.m. There are several drink and food specials, and raw oysters are among the half-priced appetizers.