Family name Tirna (Tirna 
) , around the world, is a rare cognomen. The cognomen Tirna is characteristic of Romania, where it is quite a rare surname, Norway, where it is a very rare surname, and Israel. Not in comparison with a country's population, it is commonest in Romania, Indonesia, and India. More prevalently, Tirna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tirna | China, Indonesia, Romania, Malaysia, India |
| rudolf of tirna Man of the Duchy of Austria, 14th Century (b. 1400) |
|
Sen, Biswas, Ketervar, Kebeverli, Guinan, Johson, Halder, Hughes, Fazryina, Faznet, Benvarli, Kebevarli, Gebevarli, Fazusarikos, Fazbusar, Bhaumick, Dasgupta, Fazbusarik, Fazbusew, Warfield, Mukherjee, Chowdhury, Bakshi, Murray, Mandal, Martin, Pal, Ray, Roy, Deb, Dey, Dam, Das, Saha, Aini, Paul, Chatterjee, Mitra, Sadhu, Singh, Brown, Koski, Kundu, Dunne, Guria, Ghosh, Leong, Hayes, Mipun, and Chakravorty