The Leeds United Board said on the official United website: "We are delighted to be linking up with Admiral. The club will control the supply and distribution of the kit which we believe will benefit both the club and its supporters.
"This is a significant signing for us and one that we are sure all Leeds fans will support. The team at Admiral have been followers of Leeds United for many years and are keen to use the deal to promote their brand not only regionally but also nationally and internationally as well."
Tony Hutchinson, Chief Executive of IBL plc, owners of Admiral, added: "We are delighted to once again be associated with one of the most famous football clubs in the world. Leeds United and Admiral were the pioneers of the replica market in the early 1970's and we are confident that this new agreement will deliver major benefits to both parties."
Leeds will also be launching an Admiral retro range next season enabling fans to buy authentic styles from past eras.