The Wales full back has made 101 appearances for his country and played four tests for the British and Irish Lions
The Welsh rugby union player's final game will be against the Barbarians in November.
In a statement, Halfpenny said: 'After having time to reflect after the Rugby World Cup campaign, it’s with a heavy heart that I’ve decided it’s time for me to step away from international rugby'.
Inter-County GAA Tables
Hurling Kildare v Wexford 5pm Saturday Ladies Football: Kildare away to Waterford 2pm Saturday Camogie: Kildare home to Tyrone, 2pm Saturday Footballers home to Louth, 1pm, Sunday Kfm coverage in association with Hanlon Concrete Robertstown
SFL Tables (Round 1)
Round 2 Friday & Saturday
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Friday Morning Sports Update
Keeping you up to date on GAA, soccer, rugby and darts.
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Kick-off next Thursday at 7:45pm.
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