Bochasanwasi Akshar Purushottam Swaminarayan Sanstha (BAPS; IAST: Bocāsaṇvāsī Akṣar Puruṣottam Svāminārāyaṇa Saṇsthā) is a Hindu denomination within the Swaminarayan Sampradaya. It was formed in 1905 by Yagnapurushdas (Shastriji Maharaj) following his conviction that Swaminarayan remained present on earth through a lineage of gurus starting with Gunatitanand Swami.

Since 1971, under the leadership of Pramukh Swami Maharaj, the BAPS has grown strongly. As of 2019, BAPS has 44 shikharbaddha mandirs and more than 1,200 mandirs worldwide that facilitate practice of this doctrine by allowing followers to offer devotion to the murtis of Swaminarayan, Gunatitanand Swami, and their successors. BAPS mandirs also feature activities to foster culture and youth development. Many devotees view the mandir as a place for transmission of Hindu values and their incorporation into daily routines, family life, and careers.

BAPS also engages in a host of humanitarian and charitable endeavors through BAPS Charities, a separate non-profit aid organisation which has spearheaded a number of projects around the world addressing healthcare, education, environmental causes, and community-building campaigns.

As of 2022, BAPS is facing a lawsuit in United States courts, where plaintiffs allege starvation wages, cruel work conditions, visa fraud, and passport confiscation at several temple construction sites across the country.