Ulla Pirkko Nenonen (31 October 1933, Loviisa, Finland – 9 March 2018, Tampere, Finland)
was a Finnish theologian, missionary with the Finnish Missionary Society and Bible translator, who served in missionary work in Namibia during a 54-year span.
Of Finnish missionaries, only Martti Rautanen and his wife Frieda and daughter Johanna have served longer in the mission field.Nenonen spent most of her childhood in Kuusankoski, but she graduated from high school in Imatra in 1954.
She obtained a degree in theology from the University of Helsinki in 1960.