2005–2014: Early work, success and recognition
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 for the film itself. 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.