Last month Declan Rice publicly revealed that he is switching to England from Ireland at international level. But he has won the FAI's Young Player of the Year gong.
Voting for the award took place prior to the announcement of his decision last month.
Members of the SSE Airtricity Soccer Writers’ Association of Ireland voted for the award.
The West Ham midfielder made three friendly appearances for Ireland in 2018.
In a statement, the FAI explained: "The Football Association of Ireland can confirm that West Ham United's Declan Rice has won the Young Player Of the Year award at the 29th '3' FAI International Awards taking place on Sunday, March 17.
"The award was voted for by members of the SSE Airtricity Soccer Writers’ Association of Ireland.
"At the time of the vote, Declan Rice was an Ireland international and qualified for the Young Player category in a year that saw him win three senior caps, all in '3' International Friendly games.
"Declan Rice has since opted to switch his allegiance to England. The FAI has completed his international transfer via the FIFA protocols and wishes him well in the future.
"This award maintains the integrity of the voting process in conjunction with the Soccer Writers’ Association of Ireland and the FAI thanks the jury members for their decisions relating to the awards."