Lech Aleksander Kaczynski (; 18 June 1949 - 10 April 2010) ni Aare orile-ede Poland lati 2005 de April 10, 2010 nigba to ku ninu ijamba baalu to sele ni papa oko-ofurufu Smolensk ni Russia.Itokasi awon ojoibi ni 1949Awon ojoalaisi ni 2010Awon ara Polandi.. 
O di alako Agba lati 17 December 1991 dé 9 November 1995 ati lati 24 December 2001 titi di 26 May 2010.. 