Vishnu with Sudarshana Chakra in his right rear hand
|Affiliation||Weapon of Vishnu|
The Sudarshana Chakra (Sanskrit: सुदर्शन चक्र) is a spinning, disk-like weapon with 108 serrated edges used by the Hindu god Vishnu. The Sudarshana Chakra is generally portrayed on the right rear hand of the four hands of Vishnu, who also holds a shankha (conch shell), a Gada (mace) and a padma (lotus).
The Sudarshana Chakra may be depicted as an ayudhapurusha (anthropomorphic form). He is depicted as a fierce form of Vishnu. While the Sudarshana Chakra is depicted as a subordinate figure with Vishnu, in many South Indian Vishnu temples, the Chakra as an ayudhapurusha is worshipped in its own shrine attached to the central temple.
According to the Puranas, Sudarshana Chakra is used for the ultimate destruction of an enemy. The depiction of Vishnu with Sudarshana Chakra also means that Vishnu is the keeper-owner of the celestial bodies and heavens.
The word Sudarshana is derived from two Sanskrit words – Su(सु) meaning "good/auspicious" and Darshana (दर्शन) meaning "vision". Hence, the word Sudarshana collectively means "vision of which is auspicious". Sudarshana is generally worshiped during Homas to ward off negative powers or vibrations.
The word chakra is derived from the word Chruhu (चृ:) meaning movement and kruhu(कृ:) meaning to do. Hence, chakra collectively means the one which is mobile. Among all the Vedic weapons, Sudarshana Chakra is the only mobile weapon.
There are various legends related to the origins of the Sudarshana Chakra.
The Sudarshana Chakra was made by the architect of gods, Vishvakarma. Vishvakarma's daughter Sanjana was married to Surya, the Sun God. Due to the Sun's blazing light and heat, she was unable to go near the Sun. She complained to her father about this. Vishvakarma took the Sun and made him shine less so that his daughter would be able to hug the Sun. The left over Sun "dust" was collected by Vishvakarma and made into three divine objects. The first one was the aerial vehicle Pushpaka Vimana, the second being the Trishula (Trident) of the god Shiva, and the third was the Sudarshana Chakra of Vishnu. The Chakra is described to have 10 million spikes in two rows moving in opposite directions to give it a serrated edge.
Sudarshana Chakra is considered to be the most powerful weapon in Hindu mythology.When it pursued sage Durvasa,neither Lord Brahama nor Lord Shiva could stop it. 
Sudarshana Chakra was used to cut the corpse of Sati, the consort of Shiva into 51 pieces after she gave up her life by throwing herself in a yagna (fire sacrifice) of her father Daksha. It is said that Shiva, in grief, carried around her lifeless body and was inconsolable. The 51 parts of the goddess' body were then tossed about in different parts of the Indian subcontinent and came to be known as "Shakti Peethas".
The use of the Sudarshan Chakra is occasionally mentioned in the Hindu texts of Rigveda, Yajurveda and Puranas, as an ultimate weapon of law, order and preservation to eliminate the enemy . Such enemies are enumerated variously as rakshasas, asura, and vikrutatma.
In one such instance, as scribed in the stanzas of the Mahabharat, Lord Shri Krishna, the Avatar of Lord Vishnu, beheads Shishupala with the use of the Sudarshan Chakra, for his rapacious behaviour (committing 100 mistakes each worthy of death) at the Rajsuya yagna celebration of Emperor Yudhishthira. It was also used to cut the celestial mountain Mandrachal Parvat for churning the ocean of milk (Samudra Manthan).
In Tamil, the Sudarshan Chakra is also known as Chakkrath Azhwar (translated as Ring/Circlet of God).
Temples of Sudarshan
- Sri Sudarshana Bhagavan Temple, Nagamangala
- Sri Sudarshana Sannidhi at Sriranganatha temple, Srirangapattana
- Chakrapani Temple, Kumbakonam
- Thirumogur Temple, Madurai
- Chakkarathalwar at Srirangam, temple
- Chakkarathalwar at Sri Devanatha Swamy Temple (Kanchi Varadhar Temple), Kancheepuram
- Anjumoorthy (Five Deities) Temple, at Anjumoorthy Mangalam, in Palakkad district (The main deity of this temple is Sudarshan).
- Sree Vallabha Temple, Thiruvalla in Pathanamthitta district
- Thuravoor temple,Allapuzha district. where Narasimha and Sudarshana moorthi is main deitys
- Hindu Janajagruti Samiti, "How did Lord Krishna acquire Sudarshan Chakra?" and the composition of Sudarshan Chakra
- Vishnu’s Flaming Wheel: The Iconography of the Sudarsana-Cakra (New York, 1973) by W. E. Begley
- "Ancient Vishnu idol found in Russian town", Times of India (4 Jan 2007)
- "Sudarshan Homa". Durvasala. Retrieved 2012-03-07.
- HJS. "Origin and Meaning of Sudarshan Chakra". Retrieved 2012-03-11.