K. K. Usha (3 July 1939 – 5 October 2020) was an Indian judge who served as Chief Justice of the Kerala High Court.

After retiring from the High Court, from 2001 to 2004 she was President of the Delhi-based Customs, Excise and Service Tax Appellate Tribunal.

[2] Between January 2005 and October 2006, Usha headed an enquiry by the Indian People's Tribunal (IPT) to investigate the communal situation in Orissa.

The panel, sitting in Imphal, heard testimony about more than forty cases of extrajudicial killings and other human rights violations over a five-year period.

At the age of 81, she went into cardiac arrest and died on 5 October 2020 following spinal cord surgery the previous week.