De Beers Ginza Building, 2007 The Ice Cubes, 2008 Jun Mitsui (born 1955 in Iwakuni, Yamaguchi, Japan) is a Japanese architect known for designing high-rise buildings and high-end retail buildings in Japan and other countries.

[1] After graduating from Tokyo University, Jun Mitsui worked for Architect Shin'ichi Okada in Japan until 1982.

After he received his Master of Architecture from Yale University in 1984, he practiced at Cesar Pelli & Associates, Inc. until 1992.

He returned to Tokyo as a principal of Pelli Clarke Pelli Architects Japan and went on to found Jun Mitsui & Associates, Architects in 1995.

He and his firm have been honored with numerous architectural awards.