Masahide Uehara (?? ??, Uehara Masahide, born April 26, 1959), mainly known by his pseudonym Arisu Arisugawa (?????, Arisugawa Arisu), is a Japanese mystery writer.
He is one of the representative writers of the new traditionalist movement in Japanese mystery writing and was the first president of the Honkaku Mystery Writers Club of Japan from 2000 to 2005.