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Tanabata (七夕, meaning "Evening of the seventh"), also known as the Star Festival, is a Japanese festival originating from the Chinese Qixi Festival. It celebrates the meeting of the deities Orihime and Hikoboshi (represented by the stars Vega and Altair respectively). According to legend, the Milky Way separates these lovers, and they are allowed to meet only once a year on the seventh day of the seventh lunar month of the lunisolar calendar.

In present-day Japan, people generally celebrate this day by writing wishes, sometimes in the form of poetry, on tanzaku (短冊 tanzaku), small pieces of paper, and hanging them on bamboo, sometimes with other decorations (see also Wish Tree). The bamboo and decorations are often set afloat on a river or burned after the festival, around midnight or on the next day.