Santiaga Mexican Restaurant is a Mexican restaurant in Bangkok (Siam, Chidlom & Ploenchit), $$$; open Mon–Sat 17:30–23:00; closed Sun.
Casual Mexican restaurant above Billy's Smokehouse on Phloen Chit Road, with handmade tortillas and a hot comal. Santiaga is a casual Mexican restaurant above Billy's Smokehouse on Phloen Chit Road in Lumphini, and a low-key spot for classic and regional Mexican flavours. A comal stays hot for handmade tortillas, and the tacos range from smoked tuna and Baja fish to Wagyu gaonera. The kitchen also serves Mexico City-style quesadillas, sopes and gorditas, plus wood-grilled mains, red moles and tres leches cake. BK Magazine's Top Tables named it a 2026 Best Mexican Restaurant.