Juliana of Nicomedia was a Christian martyr who lived in the late third and early fourth centuries. Born in Nicomedia, she is said to have suffered death during the Diocletianic persecution in 304. According to various hagiographical accounts, she was the daughter of a pagan named Africanus and refused to marry her betrothed, Eleusius, due to her Christian faith. Following her refusal, she endured significant torture before being executed by beheading. She is recognized as a saint in the Anglican, Catholic, and Orthodox traditions.