Maria Wasiak (born 6 July 1960, in Radom) is a Polish politician who served as Minister of Infrastructure and Development of Poland and the President of Polish State Railways.

Wasiak is a graduate of the Poznań University of Economics's business school.

In 1998 Maria Wasiak became the final deputy-voivode of the Radom Voivodeship, before that region's amalgamation with others to form the Masovian Voivodeship as part of the Polish territorial divisions reforms in 1999.

Since leaving the government Wasiak has held a number of fully managerial positions in the structures of the Polish State Railways, among others she has been Project Director (2000–2001), chairman of the board of PKP Przeowzy Regionalne (2001–2002), Director of the Office of Privatization and the executive director of promotion and social affairs for PKP.

Since 30 December 2010 when Andrzej Wach resigned from the post of President of PKP SA, Wasiak has been serving as the company's chairperson and CEO.