| Jonas Staugaitis | |
| Order: | Acting President of Lithuania |
| Term Start: | 18 December 1926 |
| Term End: | 19 December 1926 |
| Predecessor: | Kazys Grinius |
| Successor: | Aleksandras Stulginskis (acting) |
| Office1: | Speaker of the Seimas |
| President1: | Aleksandras Stulginskis Kazys Grinius |
| Term Start1: | 2 June 1926 |
| Term End1: | 17 December 1926 |
| Predecessor1: | Vytautas Petrulis |
| Successor1: | Aleksandras Stulginskis |
| Birth Date: | 20 May 1868 |
| Birth Place: | Omentiškiai, Suwalki Governorate, Russian Empire |
| Death Place: | Kaunas, Lithuanian SSR, Soviet Union |
| Party: | Lithuanian Popular Peasants' Union |
| Alma Mater: | University of Warsaw |
Jonas Staugaitis (; 20 May 1868 in Omentiškiai, Suwałki Governorate – 18 January 1952 in Kaunas) was the acting President of Lithuania during the December 1926 coup d'état.[1] He was formally elected for a few hours as the Speaker of the Seimas; as the highest-ranked official, he also became the de jure President of Lithuania. He renounced the office after the coup d'état was complete.
He was a medical doctor, having studied at the University of Warsaw. In 1919, he was elected to the Seimas (Lithuanian parliament) as a member of the Lithuanian Popular Peasants' Union. On 2 June 1926, he was elected the speaker of Seimas.[2]
He is buried in the Petrašiūnai cemetery in Kaunas.