A maypole is a tall wooden pole erected as a part of various European folk festivals, around which a maypole dance often takes place.

The festivals may occur on 1 May or Pentecost (Whitsun), although in some countries it is instead erected during Midsummer (20–26 June). In some cases, the maypole is a permanent feature that is only utilized during the festival, although in other cases it is erected specifically for the purpose before being taken down again.

Primarily found within the nations of Germanic Europe and the neighboring areas which they have influenced, its origins remain unknown. It has often been speculated that the maypole originally had some importance in the Germanic paganism of Iron Age and early Medieval cultures and that the tradition survived Christianisation, albeit losing any original meaning that it had. It has been a recorded practice in many parts of Europe throughout the Medieval and Early Modern periods, although it became less popular in the 18th and 19th centuries.^{[citation needed]} Today, the tradition is still observed in some parts of Europe and among European communities in the Americas.

English historian Ronald Hutton concurs with Swedish scholar Carl Wilhelm von Sydow who stated that maypoles were erected "simply" as "signs that the happy season of warmth and comfort had returned." Their shape allowed for garlands to be hung from them and were first seen, at least in the British Isles, between AD 1350 and 1400 within the context of medieval Christian European culture. In 1588, at Holy Trinity Church in Exeter, villagers gathered around the 'summer rod' for feasting and drinking. Geoffrey Chaucer mentions that a particularly large maypole stood at St Andrew Undershaft, which was collectively erected by church parishioners annually due to its large shape.

The symbolism of the maypole has been continuously debated by folklorists for centuries, although no definitive answer has been found. Some scholars classify maypoles as symbols of the world axis (axis mundi). The fact that they were found primarily in areas of Germanic Europe, where, prior to Christianisation, Germanic paganism was followed in various forms, has led to speculation by some that the maypoles were in some way a relic of a Germanic pagan tradition. One theory holds that they were a remnant of the Germanic reverence for sacred trees, as there is evidence for various sacred trees and wooden pillars that were venerated by the pagans across much of Germanic Europe, including Thor's Oak and the Irminsul. Ronald Hutton, however, states that "there is absolutely no evidence that the maypole was regarded as a reflection of it." It is also known that, in Norse paganism, cosmological views held that the universe was a world tree, known as Yggdrasil.

Some observers have proposed phallic symbolism, an idea which was expressed by Thomas Hobbes, who wrongly believed that the poles dated back to the Roman worship of the god Priapus. This notion has been supported by various figures since, including the psychoanalyst Sigmund Freud. Phallic symbolism has been attributed to the maypole in the later early modern period, as one sexual reference is in John Cleland's controversial novel Fanny Hill:

... and now, disengaged from the shirt, I saw, with wonder and surprise, what? not the plaything of a boy, not the weapon of a man, but a maypole of so enormous a standard, that had proportions been observed, it must have belonged to a young giant.

Ronald Hutton has stated, however, that "there is no historical basis for his claim and no sign that the people who used maypoles thought that they were phallic" and that "they were not carved to appear so."