A petition accusing Disney of "colonialism and robbery" for trademarking a phrase used in the film The Lion King has attracted more than 30,000 signatures.
"Hakuna matata" means "no problem" or "no worries" in the Swahili language, which is spoken across East Africa.
Disney first applied to trademark the catchphrase in 1994 - the same year it released The Lion King animation.
The row has arisen now amid hype over its live-action remake.
The petition is aimed at persuading the US company to abandon its "hakuna matata" trademark.