Tomasz Nalecz ['t?ma? 'naw?nt??] (listen) (born 10 October 1949 in Golymin) is a Polish historian, leftist politician, former vice-Speaker of the Sejm, a former member of the Social Democracy of Poland party (SdPl)
In the past he used to be member of the communist Polish United Workers' Party (PZPR) (1970–1990) and later its social-democratic successor, Social Democracy of the Republic of Poland.
In the years 1993-2004 he was a prominent member of Labour Union.
He left the Labour Union after SdPl was founded by Marek Borowski.
In 2003–2004 Nalecz was also the chairman of the Sejm's special parliamentary inquiring committee which tried to unravel the Lew Rywin affair.
In December 2009 Nalecz was selected as the SdPl's candidate for the election due to take place in autumn 2010.
However, following the Smolensk plane crash which killed incumbent president Lech Kaczynski and brought forward the election to June, Nalecz withdrew from the contest.