Kristupas Lekšas (31 August 1872 – 30 March 1941) was a Prussian Lithuanian activist from Klaipėda Region.

Born to a farmer's family in East Prussia, Lekšas completed only primary education.

He campaigned for pro-Lithuanian candidates to the Landtag of Prussia and Reichstag of Germany and attempted to establish a political party in 1914.

Lekšas was born on 31 August 1872 in Strilai in Landkreis Tilsit [de], East Prussia (present-day Šilutė District Municipality).

His parents were affluent farmers, but he only attended a local primary school and hired private tutors.

He was an active member of Birutė Society which organized festivals and celebrations that featured Lithuanian-language performances.

[2] In 1913–1914, he was a member of a committee in charge of erecting a monument to poet Kristijonas Donelaitis on Rambynas hill (the project was not realized due to World War I).

[1] After World War I, Klaipėda Region was detached from Germany and became a mandate of the League of Nations.

In November 1918, he participated in founding of the National Council of Lithuania Minor but did not sign the Act of Tilsit.

He was elected to the Lutheran parish council of Katyčiai several times and was a member of the synod of the Klaipėda Region since 1924.

In 1925, Lekšas was a member of the delegation negotiating region's administration in the Evangelical Church of the old-Prussian Union.

His poetry shows clear influence of Maironis and often feature imagery of ancient Lithuania, Rambynas, Lithuanian traditions.

In fall 1944, his widow buried three notebooks with Lekšas' works by their farm in Dėkintai [lt] in hopes of protecting them from the advancing Soviet forces.