Lina Tsaldari (Greek: Λίνα Τσαλδάρη; 1887 – 17 October 1981) was a right-wing Greek politician. She became the first female minister in Greece in 1956, serving as the Minister for Social Welfare under Konstantinos Karamanlis' government.

Tsaldari was born Lina Lambrou (Greek: Λίνα Λάμπρου) in 1887 to Spyridon Lambros (b. 1851 - d. 1919), who succeeded Nikolaos Kalogeropoulos as Prime Minister of Greece, serving from October 1916 to February 1917. Tsaldari was of Aromanian descent,^[1] just like her father.^[2]

Tsaldari became the first woman to serve in the Government of Greece, serving as the Minister of Social Welfare.^[3] She was also an active suffragist. After serving in Parliament, she became Permanent Representative of Greece to the United Nations.

Tsaldari married Panagis Tsaldaris (b. 1868 – d. 1936) in 1919, the same year that her father died in Skopelos. Like her father, her husband served as Prime Minister of Greece.

Tsaldari died of a stroke on 17 October 1981. She was 94 years old.^[4]