Juozas Gabrys or Juozas Gabrys-Paršaitis (used pseudonyms Inorodetz, Kareivis, C. Rivas; February 22, 1880 – July 26, 1951) was a Lithuanian politician, diplomat, lawyer, journalist, and public figure. He is best remembered for his efforts to popularize the idea of Lithuania's independence in the West during World War I. As the publisher of several ethnographic maps, he played a significant role in the propagandistic justification of the maximum borders of the Lithuanian state on the international stage.

Juozas Gabrys was born on February 22, 1880, in the town of Garliava, near the city of Kaunas, Lithuania. He went to the Garliava primary school starting at the age of seven. He graduated with a law degree from the University of Odessa in 1907.

During the 1905 Russian Revolution, Gabrys served as a secretary of the Great Seimas of Vilnius. In October 1905, he organized an armed unit in Suvalkija to close Russian schools and fight the police. During a clash with a larger Russian police detachment on the banks of the Šešupė river, Gabrys was severely wounded in the head and right arm. He was saved from the gendarmes by local peasants (Strimaitis and the Baltusiai brothers), who were later exiled to Siberia for ten years.

He went into exile in 1907 to Paris. There, in 1911, he founded the Lithuanian Information Bureau. To impress French society and gain influence, he began calling himself the "Count of Garliava" (Comte de Garlawa). In 1912, he founded the Union des Nationalités. These two organizations supplied European powers with information on Lithuania and other exploited European countries that crusaded for human rights and freedom.

In 1915, Gabrys moved from Paris to Lausanne, Switzerland. He started a campaign of political activities and held the first Lithuanian conferences during World War I to obtain freedom for Lithuania. During this period, Gabrys was recruited by the German Foreign Ministry (Auswärtiges Amt) and became a key figure in the "League of Foreign Peoples of Russia" (Liga der Fremdvölker Russlands), an organization created with German support to weaken the Russian Empire by backing national movements. Although he acted as an instrument of German propaganda, Gabrys sought to exploit this situation for the benefit of Lithuanian independence.

His campaigns were financed by Lithuanian immigrants of the United States and the German Foreign Ministry. He published articles in more than fifty European newspapers for his campaigns, sometimes bribing editors to get them through. His greatest success in organization was the Congress of Nationalities held in Switzerland in 1916 with 400 representatives from 23 nationalities.

According to Alfred E. Senn, "Gabrys was undoubtedly the best known Lithuanian political figure on the European scene before 1916." During World War I, Gabrys hoped to secure independence for Lithuania. He communicated the cruel treatment the Lithuanians were receiving from the German military when they were occupying Lithuania to the French authorities. He also called upon the Allies of World War I for assisting against German occupation. Gabrys involved the Vatican in a worldwide collection of millions of Swiss francs for Lithuanian victims of war, which ultimately ended up in his personal bank accounts.

A special role in Gabrys's activities was played by the publication of geographical and ethnographic maps, which he viewed as a powerful political tool to promote Lithuanian interests at international peace conferences.