Here are well-regarded conference venues in Colombo, with quick notes on capacity, strengths and what they’re best for — so you can pick by audience size, style and budget.

1. Bandaranaike Memorial International Conference Hall (BMICH) — best for large conventions & exhibitions

• Why: Colombo’s long-established purpose-built convention centre with large main hall, exhibition space and multiple meeting rooms; commonly used for international congresses and trade shows. (en.wikipedia.org)

2. Shangri‑La, Colombo — best for very large, high‑end MICE events

• Why: New large luxury hotel with extensive meeting space including very large pillar‑free ballrooms, many breakout rooms and outdoor lawn options — suitable for big international conferences, galas and summits. (asiatraveltips.com)

3. Cinnamon Grand Colombo — best for centrally located large hotel conferences

• Why: Multiple large ballrooms (Oak Room, Atrium etc.) and numerous breakout rooms; flexible banquet/theatre setups make it good for large corporate conferences and exhibitions. (venuedirectory.com)

4. Sheraton / Marriott properties (Sheraton Colombo, Courtyard by Marriott) — best for conferences needing modern AV and up to mid‑large capacity

• Why: International chain hotels with purpose‑built event floors, reliable AV, and on‑site accommodation — Sheraton lists up to ~250 in largest space; Courtyard/Marriott offer ~300‑capacity rooms and multiple breakout rooms. Good for regional conferences, trainings and delegate stays. (Marriott.com)

5. Taj Samudra & The Kingsbury — best for sea‑front prestige events and mid/large banquets

• Why: Established luxury hotels near Galle Face with sizeable ballrooms, marquees and strong banquet/catering teams — ideal for VIP conferences, official dinners and award nights. (See hotel event pages/listings). (brandradar.org)

6. Waters Edge (Battaramulla) — best for nature/retreat‑style conferences and weekend events

• Why: Large dedicated events grounds, lawns and conference facilities outside central Colombo — popular for corporate retreats, exhibitions and multi‑day meetings. (conferencesdaily.com)

7. Port City / New Convention & Exhibition Centre (upcoming / large‑scale) — best if you need very large exhibition halls

• Why: Port City’s new convention/exhibition centre is being promoted as Sri Lanka’s largest upcoming facility (multi‑thousand-seat auditorium and tens of thousands sqm of event space) — ideal for very large international trade shows and congresses when available. Check current opening/availability. (portcitycolombo.lk)

How to choose quickly

• For 1,000+ delegates or large exhibitions: BMICH, Shangri‑La (combined ballrooms) or the new Port City centre when available. (en.wikipedia.org)
• For 200–800 delegates with on‑site rooms: Cinnamon Grand, Sheraton, Courtyard/Marriott, Taj Samudra. (venuedirectory.com)
• For outdoor/lawn events or retreats: Waters Edge or hotel lawns at The Kingsbury/Taj. (conferencesdaily.com)

If you want, I can:

• Shortlist venues matching your expected delegate count, date and budget; or
• Pull contact / events‑sales pages and sample capacities/floorplans for 3–5 selected venues (I’ll fetch the latest availability and rates).

Which would you like next?