Kumari Mayawati (born Kumari Mayawati Das; 15 January 1956) is an Indian politician who served as the 18th Chief Minister of Uttar Pradesh from 1995 to 1995, 1997 to 1997, 2002 to 2003 and from 2007 to 2012. She is the national president of the Bahujan Samaj Party (BSP), which focuses on a platform of social change for Bahujans, more commonly known as Other Backward Classes, Scheduled Castes and Scheduled Tribes as well as religious minorities since 2003.

Mayawati had also served as a Member of Parliament, Rajya Sabha from 2012 to 2017 from Uttar Pradesh. Mayawati's rise from humble beginnings has been called a "miracle of democracy" by P. V. Narasimha Rao, former prime minister of India. In 1993, Kanshi Ram formed a coalition with the Samajwadi Party and Mayawati became the Chief Minister of Uttar Pradesh in 1995. She was the first female Scheduled Caste chief minister in India. In 1997 and in 2002 she was chief minister with outside support from the Bharatiya Janata Party (BJP), the second time only for a year up to 26 August 2003 due to BJP withdrawing support.

Mayawati's tenure has attracted praise and criticism. Millions of Dalits across India popularly view her as an icon, and refer to her as Behen-ji (elder sister). She has been praised for her fundraising efforts on behalf of her party and her birthdays have been widely celebrated by her supporters. On the contrary, the rise in her personal wealth and that of her party have been criticised as indicative of corruption.

Mayawati was born as Kumari Mayawati Das on 15 January 1956 at Shrimati Sucheta Kriplani Hospital, New Delhi. Her father Prabhu Das, was a post office employee at Badalpur village, near Dadri in Gautam Buddha Nagar. The sons in the family were sent to private schools, while the daughters went to "low-performing government schools".

Mayawati studied for her B.A. in 1975 at the Kalindi College, University of Delhi and obtained her LL.B. from the prestigious Faculty of Law, University of Delhi in 1983. She completed a B.Ed. from Meerut University's VMLG College, Ghaziabad, in 1976. She was working as a teacher in Inderpuri JJ Colony, Delhi, and studying for the Indian Administrative Services exams, when Scheduled Castes and Scheduled Tribes and Other backward castes politician Kanshi Ram visited her family home in 1977. According to biographer Ajoy Bose, Ram told her: "I can make you such a big leader one day that not one but a whole row of IAS officers will line up for your orders." Kanshi Ram included her as a member of his team when he founded the Bahujan Samaj Party (BSP) in 1984. Mayawati was first elected to Parliament in 1989.

Kanshi Ram founded the BSP in 1984. Influenced by B. R. Ambedkar, the party's primary focus is to improve the situation of Scheduled Castes and Scheduled Tribes and other disadvantaged groups through policy reform, affirmative action on hiring of members of scheduled castes for government posts, and providing rural development programmes. Reservation in India is a system whereby a percentage of government positions and seats at universities are reserved for persons of backward classes and scheduled castes and tribes. Throughout her political career, Mayawati supported reservation in both government and private sectors for backward classes, with an increase in quotas and inclusion of more communities such as religious minorities and economically weak upper castes. In August 2012 a bill was cleared that starts the process of amending the constitution so that the reservation system can be expanded to promotions in state jobs. Mayawati's career has been called a "miracle of democracy" by former Prime Minister of India P. V. Narasimha Rao. Millions of Dalit supporters view her as an icon and refer to her as "Behen-ji" (sister). Her public meetings have been attended by large audiences, who use slogans such as "Kanshi Ram ka mission Adhoora; karegi Behen Mayawati poora" (Kanshi Ram's unfulfilled mission will be completed by Mayawati) and "Behenji tum sangharsh karo; hum tumhare saath hain" (Sister, go ahead with your struggle; we are with you).

In its first election campaign in 1984, BSP fielded Mayawati for the Lok Sabha (Lower House) seat of Kairana in the Muzaffarnagar district, for Bijnor in 1985, and for Haridwar in 1987. In 1989 she was elected as the representative for Bijnor, with 183,189 votes, winning by 8,879 votes. Although BSP did not win control of the house, the electoral experience led to considerable activity for Mayawati over the next five years, as she worked with Mahsood Ahmed and other organisers. The party won three seats in the 1989 national election and two seats in 1991.

Mayawati was first elected to the Rajya Sabha (Upper House) of Uttar Pradesh (UP) in 1994. In 1995 she became, as head of her party, Chief Minister in a short-lived coalition government, the youngest Chief Minister in the history of the state up until that point, and the first female Dalit Chief Minister in India. She won election to the Lok Sabha in two different constituencies in 1996 and chose to serve for Harora. She became Chief Minister again for a short period in 1997 and then from 2002 to 2003 in coalition with the Bharatiya Janata Party. In 2001 Ram named her as his successor to the party leadership.