Forget 7-Eleven when the late-night munchies hit. 

See also: The ultimate guide to Bangkok's after-hours drinking scene

25 Degrees 

Apart from the classic cheese burger, here they let you create your own beast (starting from B210) with over 10 ingredients, sauces and cheese. From ground sirloin, caramelized onions, roasted red pepper to brie cheese, it’s like a burger version of subway with better and lively vibe.
G/F, Pullman Bangkok Hotel G, 188 Silom Rd., 02-267-5272. Open daily 24 hours.

Malai at the Malaysia Hotel

The once gloriously stuck-in-time hotel has been dragged kicking and screaming into the 21st century, but the 24-hour restaurant has thankfully remained unchanged—along with its awesome five-spice duck (B100) and rice soup (B15). 
54 Soi Ngamduplee Rama 4, 02-679-7127. Open daily 24 hours.

Lhao Lhao

Competing with Jae Liab, our favorite street seafood venue on Phahol Yothin Road does Thai-Chinese seafood for Ari’s late-night party crowd.
1271/6-7 Phahon Yothin Rd.,  02-271-4260, 02-271-2256. Open daily 4pm-4am
Credit: Foodland24hours

Took Lae Dee

Found at Foodland supermarkets all over town, this bright-lit, 24-hour chain does possibly the best 4am pad kra pao (B111) around. Best to avoid direct eye contact with the dozen or so drunken strangers in your company, though.  
Foodlands citywide. Try 9 Patpong Rd., 02-234-4558. Open daily 24 hours

Chow at Metropole Hotel

They don’t just serve a super-delicious congee (B250) with giant pa tong ko (Chinese doughnuts). They’ll also ply you with more cocktails 24/7. 
2802 New Petchaburi Rd., 02-314-8555. Open daily 6pm-4am