The SPFL will look for a new title sponsor for next season after Ladbrokes has decided not to extend its five-year partnership.
Originally priced at £ 2m per season, the contract was renewed in 2017 and announced as the largest contract in Scottish football.
Ladbrokes, however, was one of several bookmakers who agreed in December to reduce their visibility in the sport.
CEO Neil Doncaster said he expects "considerable interest".
This despite the fact that the SPFL had no sponsor for two years prior to Ladbroke's involvement.
"We are proud of the tremendous partnership we have been maintaining since 2015," said Doncaster.
"With the growth of Scottish football over the last four years, we are in an excellent shape to spark national and international interest in new sponsors.
"Given the unparalleled nationwide coverage, passion and drama that the SPFL consistently delivers, we will undoubtedly have great interest in potential title sponsors."