Vallabha, also known as Vallabhācārya or Vallabha Dīkṣita (May 7, 1478 – July 7, 1530 CE), was the founder of the Kr̥ṣṇa-centered Puṣṭimārga sect of Vaishnavism, and propounded the philosophy of Śuddhādvaita.

His biography is depicted in several sectarian Puṣṭimārga hagiographies. Born into a Telugu Brahmin family, Vallabha studied Hindu philosophy from early age, then traveled throughout the Indian subcontinent, particularly the Braj (Vraja) region, for over 20 years. He became one of the important leaders of the devotional Bhakti movement. He won many philosophical scholarly debates against the followers of Advaita Vedānta. He began the institutional worship of Śrī Nāthajī on Govardhana Hill. He acquired many followers in the Gangetic plain and Gujarat. After his death, the leadership of his sampradāya passed to his elder son Gopīnātha.

Vallabha's philosophy promoted the householder lifestyle over asceticism, suggesting that through loving devotion to the deity Kr̥ṣṇa, any householder could achieve salvation. He authored many texts including but not limited to, the Aṇubhāṣya (his commentary on the Brahma Sutras), Ṣoḍaśa Grantha or sixteen tracts and several commentaries on the Bhāgavata Purāṇa.

Events from Vallabha's life are recounted in several sectarian Puṣṭimārga texts. Among the Braj Bhasha sources include the Caurāsī Vaiṣṇavan kī Vārtā, Śrī Nāthajī Prākaṭya kī Vārtā, and Caurāsī Baiṭhak Caritra. According to Barz the most important Sanskrit source is the Śrīvallabhadigvijaya.

According to Entwistle, the Caurāsī Baiṭhak Caritra is a post-early 18th century text, due to internal references to other sectarian texts. According to Saha and Hawley, the Caurāsī Baiṭhak Caritra dates to the mid-18th century. Ṭaṁḍana, Bachrach, and several Puṣṭimārga leaders state the work was composed in the 19th century. Ṭaṁḍana also considers the Gharu Vārtā, Nija Vārtā, and Śrī Ācāryajī kī Prākaṭya Vārtā to be 19th century texts which were based on the older Caurāsī Vaiṣṇavana kī Vārtā and Do Sau Bāvana Vaiṣṇavana kī Vārtā. Bhatt states the Nija Vārtā is "full of interpolations and shows the lack of historical sense", and if it was in fact originally the work of the traditionally accepted author, Vallabha's grandson Gokulanātha, it was far removed from the original text. The Caurāsī Baiṭhak Caritra (attributed to Harirāya) enumerates the 84 baiṭhaks ("seats") of Vallabha across India where he sat and preached Puṣṭimarga tenets. According to Saha, the text seeks to promote Vallabha as an exceptional philosopher and miracle worker who acquires converts wherever; the text does this by portraying Vallabha as a digvijayin ("world-conqueror") who establishes the superiority of his philosophy in the Char Dham.

The Śrī Nāthajī kī Prākaṭya Vārtā in its current form was likely written in the 1860s, although its contents were orally known prior to the 19th century. The Vallabha Digvijaya or Yadunātha Digvijaya claims to have been composed in 1610, however modern scholars state the text was composed around the turn of the 20th century.

Other Sanskrit texts include Gadādhara Dviveda's Sampradāya-Pradīpa (colophon states A.D. 1552–53, but according to Hawley, actually from the latter half of the 1600s), Muralīdharadāsa's Śrīvallabhācāryacarita (c. 1573), Prabhucaritaciṁtāmaṇi (attributed to Devakīnaṁdana, which is baseless according to Bhatt), and the Gujarati poem Vallabhākhyāna by Gopāladāsa (c. 1580). Another Braj Bhasha work, Saṁpradāyakalpadruma, which is claimed to be composed by Viṭṭhalanātha Bhaṭṭa (a grandson of Viṭṭhalanātha's second daughter Yamunā) cannot be stated to be of old origin according to Śāstrī. Other texts by Gokulanātha's followers include Kalyāṇa Bhaṭṭa's Kallola, Keśavadāsa's Gujarati Vallabhavela, and Gopāladāsa Vyārāvāḷā's Gujarati Prākaṭya-Siddhāṁta.

According to scholars, the life of Vallabha as depicted in traditional sources contains many miracles, supernatural events, and "patently implausible features". Vallabha is considered by followers of the Puṣṭimārga to be an ideal divine incarnation who was born for a supernatural purpose, and his hagiographies mean to portray a living intimate relationship with Kr̥ṣṇa to serve as an example to devotees. Barz (1992) gives biographical account of Vallabha which includes these traditional elements. His biography has been criticized by Vaudeville for relying solely on English and Hindi Vallabhite sources and a lack of critical analysis of them typical of a Western Indologist. Śāstrī, commenting on the presence of miracles in Vallabha's biographies, notes that the texts authored by the followers of Gokulanātha, a grandson of Vallabha, contain no mention of miracles in relation to Vallabha and his second son Viṭṭhalanātha (Gokulanātha's father) making them valuable sources. This is due to the fact that these followers instead consider Gokulanātha to be God in human form, with Vallabha and Viṭṭhalanātha only being revered ācāryas. No single text contains a full biography of Vallabha, and different sources contain inconsistent and contradictory information, likely due to internal fragmentation of the religious community from the 17th to 19th centuries.