Tamanna Santosh Bhatia (born 21 December 1989), known as Tamannaah Bhatia, is an Indian actress who predominantly works in Telugu, Tamil and Hindi films. Having appeared in 89 films and ranking among the highest-paid actresses in South Indian cinema, she has received several awards, including three Santosham Film Awards, two SIIMA Awards and the Kalaimamani Award.

Tamanna Santosh Bhatia was born on 21 December 1989 in Bombay (now Mumbai), India. Her parents are Santosh and Rajni Bhatia. She has an elder brother named Anand Bhatia. She is of Sindhi Hindu origin and attended Maneckji Cooper Education Trust School in Mumbai. At the age of 13, she began learning acting and joined Prithvi Theatre for a year, where she participated in stage performances. She initially used her given name as her stage name but later altered it to "Tamannaah" for numerological reasons after gaining initial experience in the film industry. Over time, she began using her surname as well, adopting "Tamannaah Bhatia" as her stage name.

Tamannaah Bhatia made her acting debut as the female lead in the Hindi film Chand Sa Roshan Chehra in 2005, which underperformed at the box office. That year, she entered Telugu cinema with Sree and, in 2006, Tamil cinema with Kedi. In 2007, Viyabari underperformed at the box office, but her performance earned critical acclaim. She gained recognition with Happy Days and Kalloori, where her roles as a college student were well-received, and both films achieved box office success, establishing her as a leading actress in Telugu and Tamil cinema. In 2008, Kalidasu made a strong impact in Telugu cinema.

In 2009, her role in the Tamil film Padikkadavan earned praise despite mixed reviews. Konchem Ishtam Konchem Kashtam received critical acclaim but moderate box office success. Ayan was a box office success, while Ananda Thandavam underperformed despite her acclaimed performance. Kanden Kadhalai earned her praise and a South Scope award. In 2010, her Tamil road movie Paiyaa received positive reviews and commercial success, but Sura and Thillalangadi underperformed.

In 2011, Bhatia starred in the Tamil film Siruthai, where her role faced criticism, though the film was a commercial success. Badrinath had mixed reviews but was commercially successful. Venghai received mixed critical reception, while Oosaravelli was a box office success, with her performance praised. Her Telugu film 100% Love, opposite Naga Chaitanya, where she played a college student, achieved acclaim and box office success, earning her the CineMAA Award and Santosham Award for Best Actress. In 2012, her Telugu film Racha achieved commercial success, with her performance lauded. Endukante Premanta and Rebel underperformed, though her acting was praised. Cameraman Gangatho Rambabu featured her in a tomboyish role and was a box office success.

In 2013, Bhatia's Hindi film Himmatwala opposite Ajay Devgn, underperformed at the box office. Her Telugu film Tadakha, where she played the bride’s sister opposite Naga Chaitanya, was a commercial success. A The Times of India critic noted, "Tamannaah carries off the glam act with ease." Alongside several nominations, the film earned her the SIIMA Critics Award for Best Actress – Telugu. In 2014, her Tamil film Veeram was a commercial success, while the Hindi comedy film Humshakals opposite Saif Ali Khan underperformed. Her subsequent releases that year, the Hindi film Entertainment opposite Akshay Kumar, and Telugu film Aagadu opposite Mahesh Babu, both underperformed at the box office. Additionally, she appeared in the music video "Lafzo Mein" from the album Aapka... Abhijeet Sawant in 2005, performed cameos in Ready and Netru Indru Naalai in 2008, and Ko in 2011, and performed the special song "Labbar Bomma" in Alludu Seenu in 2014.

Tamannaah Bhatia reached a turning point in her career in 2015. Her portrayal of the warrior Avanthika in Baahubali: The Beginning opposite Prabhas, earned her widespread acclaim, and the film’s box office success, as one of the highest grossing Telugu films, boosted her career with diverse role opportunities. The Hindu critic Sangeetha Devi Dundoo found her "impressive". Vasuvum Saravananum Onna Padichavanga received negative reviews. In Bengal Tiger, she played a chief minister’s daughter opposite Ravi Teja, achieving box office success.

In 2016, her roles in Oopiri and Dharma Durai received positive reviews, with the latter achieving box office success and earning her the Asiavision Award for Best Actress – Tamil. She starred in the short film Ranveer Ching Returns, which was well-received. Her trilingual comedy horror film Devi earned positive reviews, with her double role praised, contributing to its box office success. She won the Asianet Film Award for Most Popular Tamil Actress and a Sify critic noted that she "carries the film" with her double act. However, Kaththi Sandai, received mixed reviews.