John Thomas Chambers[1][2][3] (born August 23, 1949) is the former executive chairman and CEO of Cisco Systems.

[10][11] After obtaining his MBA, Chambers began his career in technology sales at IBM 1976–1983 when he was 27 years old.

During Chambers' time at the company, Wang's profits declined dramatically from $2 billion 1989 to a $700 million loss in 1990.

[15] On July 27, 2015, Chuck Robbins replaced Chambers as CEO of Cisco Systems.

[18] In early 2021, Chambers became a member of the board of directors of Quantum Metric, a software company based in Colorado Springs.