The Naganatha Temple, locally known as Naganatheswar Temple, is a historically and spiritually significant Saiva (Shiva-worship) temple located in the village of Nagena in Dhenkanal district of Odisha, India. This temple is about 20 kilometers from Dhenkanal town and stands as one of the oldest and most revered shrines dedicated to Lord Shiva in the region. The temple traces its origins back to the era of the Keshari dynasty (also called Somavamsi rulers), who were instrumental in building many ancient temples across Odisha. It is believed to have been constructed during their reign, making it one of the earliest Shiva sanctuaries in the region. The presiding deity of the temple is Sri Sri Naganatheswar Shiva, worshipped in the form of a linga. Devotees consider the temple particularly sacred because. It is part of the ancient Shiva worship tradition rooted in Odisha. It is associated with the Yotirlinga network, which attracts pilgrims and spiritual seekers. The surrounding natural environment — especially the neem forest (Daruka-vana) — evokes mythological imagery referenced in scriptures. The nearby Brahmani River flows close to the temple and takes a northward turn at this point — a riverine feature considered holy and auspicious, often equated to the spiritual value of the Ganges in local belief.