Marumo no Okite (マルモのおきて, lit. Marumo's Rule, also known as Marumo's Story) is a Japanese television series which premiered on Fuji TV on April 24, 2011. This television series stars Sadao Abe as Mamoru Takagi, a public relations officer with a stationery company. It also stars child actor Fuku Suzuki and child actress Mana Ashida as Mamoru's late friend Jun-ichiro's twin children.

The television series was broadcast as part of the Fuji TV's Dramatic Sunday time slot, which airs every Sunday from 9 pm to 9:54 pm.