At The Black Box · 18-22 Hill Street, Belfast, BT1 2LA
Black Box Open Mic is a free, informal stand-up night held roughly monthly in the Green Room at The Black Box, the Cathedral Quarter’s long-running arts and performance venue on Hill Street. The format is a straightforward open mic, giving developing and hobbyist comedians a stage to test new material alongside more experienced circuit acts who drop in to try things out. Because it is free and low-pressure, the room tends to be relaxed and supportive rather than a polished showcase, and the running order and number of acts on the night can vary. It is a good option for anyone curious about Belfast’s comedy scene at grassroots level, rather than the touring names playing the city’s bigger venues.
Runs on a roughly monthly basis in the Green Room at The Black Box; the next confirmed date after this listing is Wednesday 19 August 2026, doors from 8:00pm.
Free admission, no ticket required, though checking the venue’s comedy listings nearer the date is worth doing in case of a change.
Venue: The Black Box, 18-22 Hill Street, Belfast BT1 2LA, in the Cathedral Quarter.
The bar in the Green Room and main Black Box space is open before and after the show.
Running acts and length of the night vary, as is typical for an open mic format.
The Black Box is on Hill Street in Belfast’s Cathedral Quarter, a short walk from Belfast Central and the city centre’s main bus routes. The area is dense with bars and other venues, so it is easy to combine with a night out elsewhere in the Quarter, and on-street parking in the surrounding streets is limited on weekend evenings.
Heading to The Black Box in Belfast? Antrim has plenty more to see. Read the Belfast area guide, find what else is on, and explore the towns and villages nearby.
In town for The Black Box? These Antrim tours book out in summer.