The Barnsley-based industrial recycling company has signed a new home and away shirt deal until the end of the 2016/17 season and will renew its sponsorship of the South Stand at Oakwell.
CK Beckett will also become the new sponsors of the Family Area in the East Stand and, as part of the deal, 150 complimentary tickets will be offered to Barnsley schoolchildren every week.
"Barnsley Football Club have enjoyed a special relationship with CK Beckett for more than six years now," Barnsley chief executive Ben Mansford told the club's official website.
"We've developed a truly great partnership and we're thrilled to have a local company as our principal sponsors.
"This partnership continues to deliver for both the business, the club, our supporters and the next generation of Barnsley fans."
Meanwhile, Barnsley goalkeeper Christian Dibble has signed a new one-year deal with the club.
Dibble, 20, yet to make his first senior appearance for the Reds, won his first Wales Under-21s cap last season against England and spent time on loan at Stockport.