BEIJING—Chinese corporations and wealthy individuals aren’t contributing enough to help fight the spread of Ebola in West Africa, despite the nation’s deep ties to the region, said the United Nations World Food Program’s China representative.

China’s government has publicly touted its cash and other aid contributions to the hardest-hit countries—Liberia, Sierra Leone and Guinea—as it seeks to strengthen its ties to the resource-rich continent. They include a $6 million contribution to the WFP’s efforts to battle food shortages...