Julija Biliūnienė née Janulaitytė (1880–1978) was a Lithuanian dentist.

The Lithuanian Sanitary Aid Society was a Lithuanian society established in 1918 to provide medical care to refugees during World War I. First established in Minsk, the society purchased hospital equipment of a war hospital and relocated to Vilnius in July 1918. There it opened a hospital and continued to operate it until around 1941. Over the years, the hospital treated a total of about 300,000 patients. It was a charitable society, thus many of its treatments were provided at low cost or for free. After Vilnius incorporation into the Second Polish Republic, the society and the hospital were one of a few Lithuanian institutions active in Vilnius Region. The society and the hospital were headed by Danielius Alseika and, after his death, by Vytautas Legeika.