Tsar Osvoboditel Boulevard (Bulgarian: булевард „Цар Освободител“) is a boulevard in the centre of Sofia, the capital of Bulgaria. It lies between Orlov most to the east (east of which it is called Tsarigrad Road) and Nezavisimost Square to the west, where it merges with Knyaz Aleksandar Dondukov Boulevard to form Todor Aleksandrov Boulevard west of the square. It is named after Tsar Alexander II of Russia, referred to as the "Tsar Liberator" because of his role in the Liberation of Bulgaria.
Many of Sofia and Bulgaria's institutions and representative buildings are located on Tsar Osvoboditel Boulevard, including (from east to west) the Sofia University rectorate, the National Assembly of Bulgaria, the Bulgarian Academy of Sciences edifice, the Central Military Club, the former royal palace (today accommodating the National Art Gallery and the National Ethnographic Museum), the Bulgarian National Bank.
From Orlov most to the Sofia University junction the boulevard is asphalt-paved, but it is mainly famous for the yellow Viennese cobblestones it features in its central, most representative part.
The boulevard intersects with (from east to west) Vasil Levski Boulevard at Sofia University, Georgi Sava Rakovski Street (at the Military Club) and Knyaz Alexander Battenberg Street (at Battenberg Square).