Kasethan Kadavulada (transl. Only money is God) is a 1972 Indian Tamil-language heist comedy film written and directed by Chithralaya Gopu. The film stars Muthuraman and Lakshmi, with M. R. R. Vasu, Thengai Srinivasan, Srikanth, Moorthy, Manorama, Rama Prabha and Jayakumari in supporting roles. It focuses on a young man (Muthuraman) collaborating with his cousin (Srikanth) and friend (Srinivasan) to steal money from his stingy stepmother (Manorama).

Kasethan Kadavulada, based on Gopu's play of the same name is the directorial debut of Gopu, and was produced by AVM Productions. Muthuraman and Moorthy reprise their roles from the play. The music was composed by M. S. Viswanathan, cinematography was handled by K. S. Bhaskar, and editing by R. G. Gopu.

Kasethan Kadavulada was released on 19 May 1972. The film became a commercial success, with Srinivasan's role as a fake godman becoming immensely popular. A remake with the same name was released in 2023.

Lakshmi is a dominating woman who has complete control over her husband Sivaswamy's money and treats him with utter contempt. When Ramu, Sivaswamy's son from his first wife, needs ₹3,000 (equivalent to ₹130,000 or US$1,400 in 2023) for his sister's husband, the miserly Lakshmi refuses outright. Ramu and his cousin Mali hatch a plan with their tea shop friend Appaswamy, who disguises himself as a godman named Badrinath Swamy Sukranada, to access Lakshmi's locker and steal ₹50,000.

Meanwhile, Rama, an orphan, has only one friend—Iruthayam, a doctor at a mental hospital. When Rama asks for a conduct certificate to apply for a job as Lakshmi's secretary, Iruthayam makes a blunder and gives her the certificate of another girl named Rama—who is mentally unstable.

DSP Paramantham, who had earlier arrested Appaswamy, comes to meet the supposed godman. Appaswamy manages to convince him not to take up any cases for the time being. Things take a turn when Rama sees Appaswamy without his beard but, to his surprise, does not suspect anything. Soon, a telegram arrives announcing that the real Badrinath Swamy Sukranada will be arriving in two days. This puts pressure on Appaswamy to complete the theft before then.

Meanwhile, Lakshmi's brother Mani wants to buy jewellery for his girlfriend Latha, but gets exposed by her brother. In need of money, Mani steals ₹5,001 that Lakshmi had donated to Appaswamy, but Rama catches him red-handed.

Soon, the sane Rama joins Lakshmi's household as a secretary. Despite the odd conduct certificate that claims Rama turns violent if denied what she wants, Lakshmi decides to keep her on. Rama and Ramu begin to fall in love. Coincidentally, the mentally unstable Rama and her father also land up at the same house. Matters get more tangled when her father overhears the heist plan. The unstable Rama, in a fit of anger, attacks Appaswamy. A secret understanding is struck: Ramu and Appaswamy will not reveal that the sane Rama is actually insane, and in return, the father will not expose the robbery plan.