涅墨亚狮子（希腊语：Λεον Νεμειο）希腊神话中的巨狮。它的皮坚逾金铁，刀枪不能入。“涅墨亚”三字源于它常年盘踞的涅墨亚地方。该地一马平川，位于阿卡迪亚山脉东面。

《神谱》称涅墨亚狮子的父母为双头犬和客迈拉。而伪阿波罗多洛斯认为它由众妖之祖堤丰所生。古罗马学者伊良（Aelian）博通动物学。他转引了古希腊克里特岛先知伊壁门尼特（Epiminides）的一句话，说月神塞勒涅（Selene）惊惧战栗，将涅墨亚狮子抖落人间。类似的神话也将狮子说为宙斯和塞勒涅的后代。

The Nemean lion (/nɪˈmiːən/; Greek: Νεμέος λέων Neméos léōn; Latin:Leo Nemaeus) was a vicious monster in Greek mythology that lived at Nemea. It was eventually killed by Heracles. It could not be killed with mortals' weapons because its golden fur was impervious to attack. Its claws were sharper than mortals' swords and could cut through any armor.