Nagar Kirtan (town hymn-singing) is a Sikh religious procession through public streets, in which the Guru Granth Sahib is carried, usually on a decorated float, while hymns (kirtan) are sung along the route. The procession is characteristically led by five initiated Sikhs bearing the Nishan Sahib, the Sikh flag, representing the Panj Pyare, the Five Beloved of the founding of the Khalsa, and it commonly features the display of Sikh martial arts (gatka), the distribution of free food and drink to onlookers, and the sweeping and washing of the road before the scripture passes. Nagar Kirtan is especially associated with the anniversaries of the Gurus and with festivals such as Vaisakhi and the birthday of Guru Nanak, and in the Sikh diaspora it has become a major public and communal event, bringing the community's worship out of the gurdwara and into the shared space of the town.
Nagar Kirtan processions gained a prominent public character during the era of the Sikh Empire under Maharaja Ranjit Singh in the early nineteenth century, when state patronage supported large religious processions honoring the Gurus, before the tradition receded under subsequent colonial administration. Sikh communities in the diaspora, particularly in Britain, Canada, and the United States from the 1970s onward, revived and expanded the practice on a large scale as a means of public visibility and civic presence, so that a Nagar Kirtan through a Western city today, closing streets and drawing municipal cooperation, carries on a form of public religious display with roots in nineteenth-century Punjab but a scale and civic role shaped substantially by the diaspora experience.