Adrian Tadeusz Zandberg [ˈadrian ˈzandbɛrk] ⓘ (born 4 December 1979)[2] is a Polish historian, computer programmer, doctor of humanities, and left-wing politician serving as a member of the Sejm for Warsaw I.

After studying history at Warsaw University with Anna Żarnowska, he received his doctorate for his dissertation about British and German left-wing social democratic movements.

On 14 November 2001, he published an article in the "Gazeta Wyborcza" daily newspaper written together with civil rights activist Jacek Kuroń on the topic of social justice in Poland.

[5] In May 2015, he became one of the founders of a political party Partia Razem, and was elected to the nine-member Board, together with Jakub Baran, Aleksandra Cacha, Alicja Czubek, Maciej Konieczny, Magdalena Malińska, Mateusz Mirys, Katarzyna Paprota, and Marcelina Zawisza.

[8] While some commentators claimed that the increase in popularity of Razem was at the expense of the United Left coalition (among others consisting of the Democratic Left Alliance, Your Movement, Polish Socialist Party and The Greens), which also did not win any seats, resulting in neither left-wing party being represented in the new parliament,[9] others, including United Left leader Barbara Nowacka,[10] disagreed with that assessment, pointing out that Razem attracted mostly new voters, and few of its supporters had voted for the SLD or Your Movement in previous elections[11] and that the decrease in popularity of United Left's member parties had been a steady process over the years,[12] due to past errors.

[16] In late 1990s Zandberg dated Barbara Nowacka for three years, when they were both members of the Youth Federation of Labour Union.