From poke to pizza, here are some of my favorite places to grab a quick and casual bite in D.C.:

Abunai Poke (Hawaiian) | 1920 L Street NW
Teaism (Healthy Asian) | 2009 R Street NW
A Baked Joint (Sammies & Toasts) | 440 K Street NW
Simply Banh Mi (Vietnamese) | 1624 Wisconsin Ave NW
Duke’s Grocery (Creative sandwiches, plates) | 1513 17th Street NW
Mikko (Scandinavian) | 1636 R Street NW
Immigrant Food (Global) | 1701 Pennsylvania Avenue NW
SUNdeVICH (Sandwiches) | 1314 9th Street NW
Stachowski’s Market (Deli, Sandwiches) | 1425 28th Street NW
Neopol Savory Smokery (Smoked Fish, Sandwiches) | 3210 Grace Street NW
Surfside (Tacos & Tex-Mex) | 1800 N Street NW
Super Tacos (Tacos & Mexican) | 1762 Columbia Road NW
Emissary (Light plates & Sammies) | 2032 P Street NW
Sorellina (Sandwiches and deli counter) | 2029 P Street NW
Lucky Buns (Burgers, sammies) | 2000 18th Street NW
Mercy Me (South American, cafe) | 1143 New Hampshire Avenue NW
Amsterdam Falafel (Falafel, Veg) | 2425 18th Street NW
Flower Child (Healthy bites) | 2112 Pennsylvania Avenue NW
Slipstream (Coffee, cocktails, light fare) | 1333 14th Street NW
Bantam King (Ramen) | 501 G Street NW
Jaco Juice & Taco Bar (Mexican) | 1614 Wisconsin Avenue NW
Bagels Etc (Bagels & more) | 2122 P Street NW
Call Your Mother (Bagels) | 3301 Georgia Avenue NW
Ben’s Chili Bowl (Hot dogs, Chili) | 1213 U Street NW
District of Pi (Pizza) | 910 F Street NW
White House Deli (Deli) | 1510 H Street NW
Bar Charley (American) | 1825 18th St NW
El Rinconcito Cafe (Salvadoran) | 1129 11th Street NW
Dean & DeLuca (Food hall) | 3276 M Street NW
Chaia Taco (Vegetarian Tacos) | 3207 Grace Street NW
Taco Bamba (Tacos) | 777 I Street NW
Zen Taco (Tacos) | 1747 Pennsylvania Avenue NW
Tiki Taco (Tacos) | 2010 P Street NW
TaKorean (Korean Tacos) | 1301 U Street NW
Fruitive (Vegan, healthy fare) | 1094 Palmer Alley NW
Tryst (Sammies & Sweets) | 2459 18th Street NW
El Centro D.F. (Mexican) | 1218 Wisconsin Avenue NW
Kramerbooks & Afterwords Cafe | 1517 Connecticut Avenue NW
Northside Social (Cafe) | 205 Park Ave, Falls Church, VA

Plenty of options at these markets too:
Union Market | 1309 5th Street NE
Eastern Market | 225 7th Street NE
Dupont Circle Market | 1500 20th Street NW