Kēdāranātha Temple (Sanskrit: केदारनाथ मंदिर, IAST: Kēdāranātha Mandira, lit. 'temple of the God of the field') is a Hindu temple, one of the twelve jyotirlinga of Śiva. The temple is located on the Garhwal Himalayan range near the Mandākinī river, in the state of Uttarakhand, India. Due to extreme weather conditions, the temple is open to the general public only between the months of April (Akṣaya Tritiya) and November (Kārtika Pūrṇimā, the autumn full moon). During the winters, the vigraha (deity) of the temple is carried down to Ukhimath to be worshiped for the next six months. Kēdāranātha is seen as a homogeneous form of Śiva, the 'Lord of Kēdārakhaṇḍa', the historical name of the region.

The temple is not directly accessible by road and has to be reached by a 17 kilometres (11 mi) uphill trek from Gaurikuṇḍa. According to Hindu legends, the temple was initially built by the Pāṇḍavas, and is one of the twelve Jyotirlingas, the holiest Hindu shrines of Śiva. The Pāṇḍava were supposed to have pleased Śiva by doing penance in Kēdāranātha. The temple is one of the four major sites in India's Chota Char Dham pilgrimage of Northern Himalayas and is the first of the Pañca Kēdāra pilgrimage sites. This temple is the highest among the 12 Jyotirlingas. It is one of the 275 paadal petra sthalams expounded in the Tēvaram. This temple is sung of by Tirugnāṇasambandar, Appar, Sundarar and Sekkizhar in their Tēvaram texts.

Kēdāranātha was the worst affected area during the 2013 flash floods in North India. The temple complex, surrounding areas, and Kēdāranātha town suffered extensive damage, but the temple structure did not suffer any major damage. A large rock among the debris acted as a barrier, protecting the temple from the flood.

The Kedarnath Temple is dedicated to the Hindu deity Shiva, who is worshipped locally under the name Kedarnath. The name is derived from Sanskrit, with "Kedarnath" (also rendered as Kedaranatha or Kedareshvara) meaning "Lord of the Marshy Ground". The site is regarded as a dham, a term denoting a particularly sacred abode of a deity. The presence of Shiva at Kedarnath is believed to be svayambhu (self-manifested), indicating that the deity's form is naturally occurring rather than sculpted by human hands. Bhukund Bhairavnath is the guardian deity, kul-devta, associated with the Kedarnath Temple. His open-air shrine is situated on a ridge overlooking the main temple complex.

It is not certain who built the original Kedarnath temple and when. The name "Kedarnath" means "the lord of the field": it derives from the Sanskrit words kedara ("field") and natha ("lord"). The text Kashi Kedara Mahatmya states that it is so called because "the crop of liberation" grows here.

At a height of 3,583 m (11,755 ft), 223 km (139 mi) from Rishikesh, on the shores of Mandakini river, a tributary of Ganga, is a stone edifice of unknown date. One of the earliest references to Kedarnath occurs in the Skanda Purana (c. 7th-8th century), which contains a story describing the origin of the Ganges river. The text names Kedara (Kedarnath) as the place where Shiva released the holy water from his matted hair.

According to the hagiographies based on Madhava's Sankshepa-shankara-vijaya, the 8th century philosopher Adi Shankara died at the mountains near Kedarnath; although other hagiographies, based on Anandagiri's Prachina-Shankara-Vijaya, state that he died at Kanchipuram. The ruins of a monument marking the purported death place of Shankara are located at Kedarnath. Kedarnath was definitely a prominent pilgrimage centre by the 12th century, when it is mentioned in Kritya-kalpataru written by the Gahadavala minister Bhatta Lakshmidhara. Adi Shankara was believed to have revived this temple, along with Badrinath and other temples of Uttarakhand; he is believed to have attained Mahasamadhi at Kedarnath.

The Kedarnath valley, along with other regions of Uttarakhand, experienced catastrophic flash floods on 16 and 17 June 2013. On 16 June, at about 7:30 p.m. a landslide and mudslides occurred near Kedarnath Temple with loud peals of thunder. An enormously loud peal was heard and huge amounts of water started gushing from Chorabari Tal or Gandhi Tal down Mandakini river at about 8:30 p.m. washing everything away in its path. On 17 June 2013 at about 6:40 a.m. waters again started cascading at a huge speed from river Swaraswati and Chorabari Tal or Gandhi Tal bringing along with its flow huge amount of silt, rocks, and boulders. A huge rock got stuck behind Kedarnath Temple and protected it from the ravages of the flood. The waters gushed on both the sides of the temple destroying everything in their path. Even eyewitness observed that one large rock got carried to the rear side of Kedarnath Temple, thus causing obstruction to the debris, diverting the flow of river and debris to the sides of the temple avoiding damage. The rock which protected the temple is worshipped as the God's Rock (भीम शीला).