Fine Gael party chairman Dan Neville is to step down at the election to make way for his son Tom to seek a nomination.
The Limerick TD said he felt the "time is right to pass on the baton of representing the constituency to a younger person".
His son, who is a sitting councillor in Limerick city and county, will be seeking to run on the Fine Gael ticket.
However, Mr Neville (69) said that there would be "no special treatment".
While announcing his retirement, he also joined in the criticism of chief whip Paul Kehoe for saying Enda Kenny should remain as Taoiseach into the next decade. He was "disappointed" by Mr Kehoe's surprise comments, which have added "stress" to the party.
"Most of my colleagues in the parliamentary party are of the view that this has not been helpful or welcome at this stage.
"In the first instance, the parliamentary party decides who is leader and in the second, it is the electorate who decide who is Taoiseach," he told the Irish Independent.
As chairman of the Fine Gael parliamentary party, Mr Neville will be welcoming his party colleagues to Fine Gael's two-day annual parliamentary party meeting in his own constituency from September 10-11.