7x7 may refer to:
Boeing 7x7 series, Boeing's "7-Series" of airliners Boeing 767, wide-body aircraft codenamed "7X7" during development 7x7 (magazine), a San Francisco-focused fashion, food, and entertainment magazine 7x7 (website), a Russian website V-Cube 7, the 7×7×7 version of Rubik's Cube
See also 7 & 7 7/7