The left sided midfielder or defender began his career at Cheltenham Town as a youngster, before spells at Solihull Moors, Evesham United and Gloucester City.
Manager Paul Holleran told the club’s official website he felt that Bowen could be a key player for his side in the coming campaign.
He said: “I’m delighted to get James on board. Being able to get another left footed player in the squad was important.
“He is a versatile, energetic player who like the majority of our squad is still at a young age with plenty of potential but I believe he will be a massive asset for us this season.”
Bowen helped Hereford to the Southern League Premier Division title last season and will now line up for Leamington against the Bulls in the National League North.