BAPS Swaminarayan Akshardham in Robbinsville, New Jersey is a large Hindu mandir (temple) built between 2015 and 2023 by the BAPS Swaminarayan Sanstha, which venerates Swaminarayan (1781–1830) as the highest manifestation of Purushottama (Vishnu). It is by a significant margin the largest Hindu mandir in the Western Hemisphere, and the second-largest in the world.

The central shrine is dedicated to its founders Swaminarayan and Gunatitanand Swami, worshiped together as Akshar Purushottam Maharaj (supreme God). The Akshardham was initiated by BAPS's fifth spiritual leader, Pramukh Swami Maharaj, and is one of the three Akshardham mandirs constructed by the BAPS Swaminarayan Sanstha; the other two are in New Delhi and Gandhinagar in India.

The Akshardham campus also contains the BAPS Shri Swaminarayan Mandir (Robbinsville, New Jersey), a smaller traditional shikharbaddha mandir built between 2010 and 2014; and further Nilkanth Plaza, a welcome center, a vegetarian cafe, the BAPS Swaminarayan Research Institute, a museum, and an event center.

In May 2021, a lawsuit was filed against BAPS by several artisans from India who were involved in the construction, alleging that the temple administrators violated labor laws. The lawsuit alleged that over 200 Indian men, mostly of the Dalit caste, were brought from India to the US and were subject to wage theft, forced labor, and human trafficking. A BAPS spokesperson denied these allegations, stating that the artisans had come to the US as religious volunteers as part of their devotion, not as employees. By July 2023, 12 of the plaintiffs had withdrawn from the lawsuit citing religious conviction. The lawsuit is on hold, pending a federal investigation.