Francis Cummins marked his testimonial with a 28-0 win as 6,363 fans saw Leeds end their pre-season matches in style. Huddersfield's Paul March was sent to the sin-bin twice and four others also received yellow cards in a niggly game.
Danny McGuire and Ryan Bailey scored first-half tries and Bailey went over again just after the break.
Mark Calderwood ran 70 metres to score on the hour and Keith Senior touched down in his first pre-season outing before Cummins completed the scoring.