He has been beaten on a 3-2 split decision against Indonesia's Aldoms Suquor in the last 64.
Earlier this year he secured a bronze medal at the European Games.
He beat Spain's Martin Molina Salvador on a split decidion in their light-flyweight boxing quarter-final in Minsk.
Buckley then advanced to the semi-finals but lost out along with Michael Nevin and Grainne Walsh.
The Wicklow native won Ireland's first medal at this Games.
Elderly Man Hospitalised With Serious Injuries Following Bray Bus Collision
Gardaí make call for any footage, including dash-cam, after an incident in Bray involving a bus and pedestrian
Snow Warning Issued For Wicklow After A Day of Wind and Rain
Temperatures are expected to drop to from 9pm. Wicklow County Council has confirmed county roads will be gritted tonight.
Arklow Born Olympic legend Ronnie Delany — Immortalised Forever In Gold Dies Aged 91
Wicklow-born sporting legend Ronnie Delany is remembered fondly in Arklow where he was born and forever immortalised in marble after his golden glory at the Olympics
Wicklow To Receive Government Funding To Bring Vacant Local Authority Homes Back Into Use
€1.36m is allocated to bring vacant social homes back into use in Wicklow
Major Wicklow Train Station Upgrade Moves Ahead as DART Plans Progress
Major upgrade planned for Wicklow Train Station with work on new bridge to begin this year
7:00am - 10:00am
Saturday Breakfast
Light rain
High: 7°C | Low: 3°C
Light rain
High: 7°C | Low: 3°C
Light rain
High: 7°C | Low: 1°C
Light rain
High: 7°C | Low: 0°C
Light rain
High: 7°C | Low: 1°C