Mottainai Bāsan

Mottainai Bāsan (もったいないばあさん; English-Japanese and English-Hindi bilingual editions published under the translated title Mottainai Grandma, and also known as The Waste-Not-Want-Not Grandmother or No-Waste Grandma ) is the first book from the "Mottainai Grandma" series written by Japanese author Mariko Shinju. The book was published in 2004. The Japanese word mottainai means "don't be wasteful" or "what a waste!"

On January 13, 2018, it was released in Hindi and English translation in New Delhi, India, by the Japan International Cooperation Agency. An earlier Japanese-English bilingual edition (pictured) was published by Kodansha in November 2005.

Shinju started having ideas about writing the book while trying to explain wastefulness to her child.