Unity Party of Nigeria (UPN) ló ti fìgbà kan jẹ́ ẹgbẹ́ òṣèlú ilẹ̀ Nàìjíríà tẹ́lẹ̀ tó lààmì laaka ní apá ìwò oòrùn ilẹ̀ Nàíjíríà lásìkò ìjọba àwa-arawa ẹlẹ́kejì  (second republic) ní ọdún 1978-1983.. 