Beetham has proven his quality and versatility to Cardiff head coach Corniel van Zyl.
“He is a great young player, who is diligent, professional and highly motivated and we are delighted to keep him here at the Arms Park,” said van Zyl.
“Not only is he versatile, but he is a very good player, with high skill level and knowledge of the game.
“He’s had a few injury issues in the past, which have prevented him from pushing on but he’s growing in consistency and adding to his game.
“He is enjoying some good form at the moment and has settled well on the wing, which suits him with the way the game has developed.
“That versatility is invaluable to us and while it can be challenging at times for the individual, Jacob has the ability to nail his role in whatever position he plays.”
Van Zyl believes Beetham can add to his one Wales cap.
“I’m excited for what the future holds for Jacob,” said van Zyl.
“The next step is establishing himself as a certainty in our team and while he has had a taste with Wales, I am confident there is more to come.”
