Here are well-known hotels in Colombo that offer wedding venues (ballrooms, lawns, oceanfront sites) with quick notes on venue type, typical capacity, and the hotel events contact page for each.

• Shangri‑La Colombo — large pillarless ballroom (very large weddings), outdoor lawn options; capacity up to several thousand for the ballroom; wedding concierge/events team: events.slcb@shangri‑la.com / phone on site. (shangrilaindiaweddings.com)

• Hilton Colombo — multiple banquet halls including a pillarless Grand Ballroom (up to ~900 theatre / ~700 banquet depending on layout); in‑house wedding planner and wedding packages. (hiltoncolombo1.com)

• Cinnamon Grand Colombo — several indoor rooms (Oak Room, Ivy Room, Atrium) plus poolside and Angsana garden for outdoor weddings; capacities vary (examples: Oak Room ~500, Atrium ~250, poolside/garden ~100). (cinnamonislandweddings.com)

• Taj Samudra, Colombo — ocean‑view lawns and a Grand Marquee; large capacities (examples: marquee up to ~1,500; other spaces ~300–350 depending on setup). (tajhotels.com)

• Galle Face Hotel — historic ballrooms (Grand Ballroom, Jubilee Ballroom) and the Chequerboard oceanfront lawn; capacities range from ~150 up to ~1,000 for large outdoor events. (gallefacehotel.com)

• The Kingsbury Colombo — multiple ballrooms plus The Oval lawn facing Galle Face Green and the ocean; capacities: Oval/outdoor up to ~500–600; Balmoral/Victorian ballrooms for smaller to mid‑size weddings. (thekingsburyhotel.com)

• Cinnamon Lakeside Colombo — lake‑side ballrooms and indoor/outdoor event spaces (e.g., King’s Court, Ballroom) for medium to large weddings; contact events team via Cinnamon events pages. (cinnamonhotels.com)

• Galadari Hotel Colombo — several banquet halls (Grand Ballroom, Bougainvillea, Anthurium, etc.) with packages and capacities from ~100 up to ~800 depending on the hall. (galadarihotel.lk)

• Mount Lavinia Hotel (beachfront, just south of central Colombo) — colonial‑era hotel with multiple ballrooms and beach/terrace wedding options (Empire Ballroom, Regency/Imperial rooms, beach areas); capacities vary up to several hundred. (mountlaviniahotel.com)

Notes and next steps

• Each hotel has multiple venue options and different package inclusions (changing rooms, couple’s stay, catering options, audiovisual, in‑house planners). The capacity figures above are typical ranges drawn from the hotels’ event pages but exact limits depend on layout (banquet vs theatre vs cocktail).
• To get firm availability, pricing or compare packages I can check specific dates and a guest count for you — tell me the wedding date (or date range) and estimated number of guests and I’ll look up current packages/availability and highlight the best matches.

Would you like me to check availability/pricing for any specific date or guest count?