Sândominic () is a village and commune in Romania, located in eastern Transylvania's Harghita County. According to the 2002 census, the population numbers 6,401, of whom 6,297 (98.4%) identify as Hungarians. The village's population is overwhelmingly Székely and Roman Catholic, although the census also recorded 74 Roma, 29 Romanians and 1 German.<ref> Census data</ref>
Because the majority of the population speaks Hungarian, the name Sândominic is generally used only for official governmental purposes; in almost all cases the people refer to the village simply as Domokos.
The northern reaches of the village follow the descent of the river Olt to the town centre. Within the town limits, the Lok and Szádakút brooks meet the river, which then flows south to the village of Tomesti (). In 1967, the northern village of Bălan (), long a part of the commune but by then more populous than the central village, gained official town status and was separated from Sândominic; however, the two settlements still share important economic and transport links.
The village is served by the Izvorul Olt station of Romanian State Railways, on the Războieni-Târgu Mureş-Deda-Miercurea Ciuc-Sfântu Gheorghe-Braşov line.
In 1920, Sândominic, like the rest of Transylvania, passed with the Treaty of Trianon from Hungarian to Romanian control. The region passed again to Hungary with the 1940 Treaty of the Belvedere (also known as the Second Vienna Award). In 1944, the village was the site of particularly bloody reprisals by Romanian irregulars participating in the recapture of Transylvania from this Hungarian control; a small monument in the village's central square bears witness to the 14 victims, among them an 86-year-old woman.
A small village museum, containing historic farm equipment, costumes and weaponry, has been installed in the upper floor of the former House of Culture. The lower floor retains its function as a meeting-hall and often hosts musical and theatrical events.
Examples of the famous "Székely gates," richly carved wooden gates often several metres in height, can be seen throughout the village. For this and other reasons, Sândominic has long attracted the attention of ethnologists and anthropologists.