PUMA will end their partnership with the IRFU as the "official kit supplier to Irish Rugby" at the end of the season 2013/2014.
This agreement has been reached in the wake of Puma's strategic decision to exit all rugby activity across Europe.
The IRFU chief executive Philip Browne said: "We want to thank Puma for their support over the past number of years. They have been an exemplary sponsor of Irish Rugby.
"The early engagement and manner in which they approached their requirement for an exit to the Irish contract reflects their genuine interest in the wellbeing of Irish rugby.
"With the RWC 2015 in England, the 18-month time-scale for the ongoing supply of kit allows us ample time to source a world-class kit partner to replace the Puma brand."
Meanwhile, Connacht have signed Exeter Chiefs second row Aly Muldowney on a three-year contract.