Oyakodon (親子丼), literally "parent-and-child donburi", is a donburi, or Japanese rice bowl dish, in which chicken, egg, sliced scallion (or sometimes regular onions), and other ingredients are all simmered together in a kind of soup that is made with soy sauce and stock, and then served on top of a large bowl of rice.

The earliest written mention of the terms "oyako" and "don" in combination is in a newspaper advertisement for a restaurant in Kobe in 1884.

The advertisement mentions dishes named oyakojōdon, oyakonamidon and oyakochūdon, possibly referring to different sizes.

[2] Several other Japanese dishes pun on the parent-and-child theme of oyakodon.

Tanindon (他人丼), literally "stranger bowl",[3] is otherwise identical but replaces the chicken with beef or pork.