The Telugu Desam Party (transl. Party of the Telugu Land; abbr. TDP), is a regional Indian political party active in the southern states of Andhra Pradesh and Telangana. The party was founded by N. T. Rama Rao on 29 March 1982. Since 1995 the party has been headed by N. Chandrababu Naidu, former Chief Minister of Andhra Pradesh. The party's headquarters is located at NTR Bhavan in Hyderabad.

N. T. Rama Rao became the 10th Chief Minister of Andhra Pradesh in 1983, within nine months of the party's formation, thus forming the first non-Indian National Congress (INC) government in Andhra Pradesh. TDP was the first regional party to become the main opposition party at the 8th Lok Sabha from 1984 to 1989.

An internal party coup played out in August 1995 and an indignant NTR, who was desperate to explain to anybody who cared to listen about this ‘treachery’ (he used the exact same word in a press meet), finally died in January 1996. The party was taken over by Chandra Babu Naidu

On 16 March 2018 the TDP walked out of the National Democratic Alliance (NDA).

After the TDP's electoral defeat in the Lok Sabha and Assembly polls held on 11 April 2019, the TDP's legislative party in the Rajya Sabha merged with that of the Bharatiya Janata Party (BJP).