King will Chair the Executive Committee of Jake Ball, Steff Hughes, Dan Lydiate, Lewis Evans, Tyler Morgan, Josh Turnbull and Ellis Jenkins who represent the voices of all players in relation to issues in the game.
The WRPA also plays an important role in player personal development, through an industry-leading Personal Development Programme and a range of other initiatives.
"It's a huge honour to be elected as Chairman of our players' association and I'll do my very best to represent their views and interests as we contribute towards the success and sustainability of the game in Wales," said King.
'I've been heavily involved in Welsh rugby for over 10 years both on and off the field and I'm confident that I've built up the knowledge and experience to provide an equal and 'just' view as chairman moving forward.
"On behalf of every player, I'd like to thank Ken for the years of service he's given to the WRPA as Chairman. On and off the pitch, he gives you everything; and he's put in so many hours of effort which have never gone unrecognised and I'm extremely proud to be carrying on the hard work that he's put in over the last five years.
"As an advocate of every player being heard and having a voice, I am excited to welcome this new challenge and thank everyone for their support."