David William Gruen AO FASSA (born 31 August 1954) is an Australian statistician and mathematician.

He previously served as Deputy Secretary, Economic and Australia's G20 Sherpa at the Department of the Prime Minister and Cabinet.

He previously held office as the executive director of the Macroeconomic group of Australian Treasury and was the head of the Economic Research Department of the Reserve Bank of Australia from 1998 to 2002.

[3] He was elected a Fellow of the Academy of the Social Sciences in Australia in 2023.

This article about an Australian scientist is a stub.