The 26-year-old had his resignation from Salford accepted this week, and he will go straight into contention for the Wildcats’ squad for the game against Hull FC next week.
“I am delighted to welcome Kevin Locke to the club,” said Wakefield chairman Michael Carter.
“Kevin showed a great desire to come and play his rugby here and get a smile back on his face.
“We think we can help him achieve that which will be good for him and us. I can’t wait to see him pull on the red, white and blue jersey.”