Hiroe Makiyama (牧山 弘恵 Makiyama Hiroe?, born September 29, 1964) is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature) representing the Kanagawa At-large district.
Makiyama graduated International Christian University in 1987 and briefly worked at Tokyo Broadcasting System before moving to the United States to attend the Thomas M. Cooley Law School. She was admitted to the bar in New York and Connecticut and practiced at the New York law firm of Marks & Murase (later Bingham Dana).
She entered politics by running in the 2005 general election for the House of Representatives, in which she was defeated by former foreign minister Yoriko Kawaguchi. She was elected for the first time in the 2007 House of Councillors election.