Yoo Mi Heo was 16 when she disappeared from Toronto, Ontario. She had just turned 16 the day before she was last seen on June 23, 2011, at a Youth Centre in the city. Newly arrived from Korea and unable to speak English, she was known to spend time around Yonge Street and Finch Avenue.

Yoo Mi is described as 5 feet 1 inch, with brown hair and brown eyes. At the time she was wearing a black and white plaid shirt, a black cotton skirt over black leggings, and brown leather sandals. The circumstances of her disappearance remain unclear, and little public information about the investigation has been released. The Toronto Police Service is handling the case and her details have been circulated by groups that work on missing children cases.

If anyone saw Yoo Mi in Toronto around late June 2011 or has information about her movements after June 23, 2011, please come forward.