Anna Anastazja Piasecka (March 13, 1882 – August 8, 1980) was a Polish politician, educator and activist. She served in the Legislative Sejm of the Second Polish Republic.^[1]

The daughter of Paweł Łęgowski and Julianny z Balcerowiczów, she was born Anna Anastazja Łęgowska in Feliksowo near Wąbrzeźno in West Prussia. She worked as a Polish language teacher and established the first Polish kindergarten in Kwidzyn in 1919.^[1]

She was elected to the Sejm for Kościerzyna district in a by-election held in Pomerania in May 1920 as a member of the National Workers' Party. At the end of 1920, she joined the Polish People's Party "Piast".^[1]

She was a member of a group which worked towards the East Prussian plebiscite of 1920.^[1]

She married Jan Piasecki.^[1]

At the end of 1920, Piasecka moved to Toruń where she later died at the age of 98.^[1]