The 27-year-old is widely considered as one of the best players in the Nigerian top-flight and has long been tipped for a move to Europe.
Last season he netted eight goals in 13 league games before the league was cancelled due to the Covid-19 pandemic, while he added four goals and three assists in six CAF Confederation Cup outings.
Along with the natural eye for goal and composure in the final third, Dimgba's dribbling ability is considered one of his key attributes.
"Stellenbosch is delighted to announce its latest acquisition: Stanley Dimgba Sopuruchi," the club statement read. "The Nigerian International joins the club on a long term basis ready to make his mark on the PSL."