Johannes Gerardus Maria "Hans" Alders (born 17 December 1952) is a retired Dutch politician Labour Party (PvdA) and businessman.

Alders was previously Minister of Housing, Spatial Planning and the Environment (1989—1994) and Queen's Commissioner (1996—2007) in the province of Groningen.

He was spokesman for civil servants, among other things, and later secretary of the PvdA faction and confidant of Wim Kok.

In 2005, after an investigation by a national weekly newspaper, Alders made the news because of all the Queen's Commissioners, he had the highest income from ancillary positions.

In 2008 Hans Alders became chairman of the Alderstafel, which resulted in a recommendation about noise pollution at Schiphol Airport.

This task force was intended to make suggestions to the government for the long-term conservation and sustainable use of biodiversity.

On 27 June 2014 Alders was appointed chairman of the Supervisory Board of Prorail with effect from 1 July that year.