Maria Fernanda Moreira Ribeiro, GCIH (Portuguese pronunciation: [f??'n?~d? ?i'b?j?u], born 23 June 1969), is a long-distance runner born in Penafiel, Portugal.
The pinnacle of her career was at the 1996 Summer Olympics when she won the women's 10000 m gold medal, establishing a new Olympic record of 31:01.63.
Her victory gave Portugal its third Olympic gold medal.