Yaaradi Nee Mohini (transl. Who are you, beautiful woman?) is a 2008 Indian Tamil-language romantic drama film directed by Mithran Jawahar in his directorial debut. It is a remake of the 2007 Telugu film Aadavari Matalaku Arthale Verule and stars Dhanush and Nayanthara in lead roles, whilst Karthik Kumar, Raghuvaran, K. Viswanath, Karunas, and Saranya Mohan play supporting roles and slightly different climax. The music was scored by Yuvan Shankar Raja.

Yaaradi Nee Mohini was released on 4 April 2008. The film became highly successful at the box office, emerging as one of the highest grossing Tamil films of the year.

Vasudevan is a youth from a middle-class family. He makes several bids to obtain employment, but all go in vain due to his poor English language skills and inadequate educational qualifications. All his friends become settled in life, but he continues to struggle to find work. Vasu has two faithful friends, Cheenu and Ganesh. His father, who is a teacher, is always critical of him for being an irresponsible person. This adds to his woes.

At this juncture, Vasu glimpses a woman named Keerthi and immediately falls in love with her. He learns that she works for a software solutions firm. Luckily for him, Vasu secures employment at the same firm after completing several interviews. Keerthi eventually turns out to be a short-tempered young woman. On a business trip, Vasu accompanies her and two other colleagues to Australia. There, he reveals his feelings of love for her. She immediately turns him down, saying that she comes from an Orthodox family, and that her marriage has already been arranged with her uncle's son.

A depressed Vasu returns to India thereafter. Unable to see his son in depression, his father decides to meet Keerthi, but she abuses him for recommending his son's love and accidentally slaps Vasu and his father. Later that night, Vasu's father dies of a heart attack. To help change Vasu's mood, Cheenu persuades him to come to his family house in the country. Coincidentally, on the train journey, Keerthi is revealed to be Cheenu's fiancée. However, their grandfather's thoughts of getting them married earlier are put aside because Cheenu and Keerthi leave the house to have their own identities. This causes heartache for their grandfather.

With the passing of a few days, Keerthi and Cheenu's parents decide to get them married to appease their grandfather. After several turns of events, Keerthi realises that she is in love with Vasu instead. Vasu asks her to forget him because he believes that it would create problems in their happy family. Cheenu overhears their midnight conversation. During the wedding, Cheenu tries to force Vasu and Keerthi to confess their relationship to everyone. But when they hesitate to do so, Cheenu stops the marriage himself, by lying to his elders that he has a secret wife in Chennai. When Cheenu comes under fire from his relatives, Vasu tells them the truth and is driven out of the house. He is joined only by the grandma of the house, who agrees to accompany him as she reminds him of his late father.

In time, the rest of Cheenu and Keerthi's family come to stay with him for a few days. But Cheenu's grandfather refuses to enter the house, telling Vasu he is still angry with him and needs time to change himself somehow. The film ends when Vasu and Keerthi become a couple and live together happily.

Mithran R. Jawahar, an associate of Selvaraghavan, made his directorial debut with this film, which is a remake of Selvaraghavan's Telugu film Aadavari Matalaku Arthale Verule (2007), while Jyothika was offered the female lead role, but she opted out of the contract due to her wedding arrangements and plans. Asin was offered the role but didn’t sign the dotted lines due to date clashes with her Bollywood projects. She was later replaced by Nayanthara. The film's original climax was ambiguous whether the lead characters reunite; post-release, it was changed to show them definitively reuniting.