赫墨拉（Ήμερη / Hemera）是希腊神话中白昼的化身。她是厄瑞玻斯和倪克斯（黑夜）的女儿。赫西俄德的《神谱》的后半部分说她是后者的姊妹，她们两个轮流进出塔耳塔罗斯，形成了昼夜交替。

她和兄长埃忒耳生下了塔拉萨（海洋）。

In Greek mythology Hemera (/ˈhɛmərə/; Ancient Greek: Ἡμέρα [hɛːméra] "day") was the personification of day and one of the Greek primordial deities. She is the goddess of the daytime and, according to Hesiod, the daughter of Erebus and Nyx (the goddess of night). Hemera is remarked upon in Cicero's De Natura Deorum, where it is logically determined that Dies (Hemera) must be a god, if Uranus is a god. The poet Bacchylides states that Nyx and Chronos are the parents, but Hyginus in his preface to the Fabulae mentions Chaos as the mother/father and Nyx as her sister.