Tomasz Nałęcz (born 10 October 1949 in Gołymin) 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 Nałęcz was also the chairman of the Sejm's special parliamentary inquiring committee which tried to unravel the Lew Rywin affair.
In December 2009 Nałęcz 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 Kaczyński and brought forward the election to June, Nałęcz withdrew from the contest.[1]