Here are widely used hotels in Colombo that offer meeting / conference rooms (small boardrooms up to large ballrooms). I’ve listed the key meeting-capacity/room highlights and linked each hotel’s meetings page as the source.

• Shangri‑La, Colombo — large ballroom options (Shangri‑La Ballroom, Lotus Ballroom, multiple breakout “Spice Rooms”), capacities from small meeting rooms up to thousands; dedicated meetings team and coworking “Co-nnect” spaces. (shangri-la.com)
• Hilton Colombo — multiple meeting rooms (about 6 rooms), pillar‑free ballroom and ~1,373 m² total event space; connected to World Trade Centre. (hilton.com)
• Taj Samudra, Colombo — several banquet halls and ballrooms (multiple venues, largest ballrooms and lawns for large conferences/banquets; 8–9 meeting venues listed). (tajhotels.com)
• Cinnamon Grand Colombo — many event spaces (Oak Room ballroom, Atrium, boardrooms and breakout rooms), large total meeting capacity and dedicated MICE services. (cinnamonhotels.com)
• Cinnamon Lakeside Colombo — large ballrooms (King’s Court, Queen’s Court), three executive/boardroom suites and lakeside/outdoor event options. (cinnamonhotels.com)
• The Kingsbury Colombo — several meeting/board rooms and large halls (Knightsbridge, Dorchester, Winchester etc.) with capacities from intimate boardroom to ~200+; full AV and event services. (thekingsburyhotel.com)
• Galle Face Hotel — multiple meeting rooms, Jubilee & Grand ballrooms and several smaller rooms (boardrooms and mid‑size venues), delegate packages available. (gallefacehotel.com)
• Mövenpick Hotel Colombo — meeting rooms and event facilities in central Colombo (hotel meetings page with contact info). (movenpick.accor.com)
• Jetwing Colombo Seven — contemporary meeting rooms (Barnes and Kynsey), capacities for intimate board meetings up to ~150 (banquet/cocktail configurations available). (jetwinghotels.com)
• Marino Beach Hotel — multiple function rooms including a 100‑pax Ruby function room and a small Pearl meeting room (suitable for smaller meetings/events). (marinobeach.com)

If you want, I can:

• Filter these by required capacity (e.g., boardroom for 10, conference for 200), budget, or Colombo neighborhood; or
• Pull phone/email contact and rental rates or delegate‑package details for specific hotels/dates.

Which follow‑up would you like me to do (capacity filtering, contact details, or availability for specific dates)?