Janaki Ammal Edavalath Kakkat (4 November 1897 – 7 February 1984) was an Indian botanist who worked on plant breeding, cytogenetics and phytogeography. Her most notable work involved studies on sugarcane and the eggplant (brinjal). She also worked on the cytogenetics of a range of plants and co-authored the Chromosome Atlas of Cultivated Plants (1945) with C.D. Darlington. She took an interest in ethnobotany and in plants of medicinal and economic value from the rain forests of Kerala, India. She was awarded a Padma Shri by the Indian government in 1977.