Mesame Dasi (Georgian: მესამე დასი) was the first social-democratic party in the Caucasus, based in Tbilsi, Georgia. It was founded in 1892 by Egnate Ninoshvili and M. G. Tskhakaya as a literary-political group, and became affiliated with the international socialist-Marxist movement in 1893. The name, meaning "third group," was coined by G. E. Tsereteli during his speech at the funeral for Ninoshvili and it was printed in the newspaper Kvali.
The Georgian Social Democrats were the ones who took over the name Mesame Dasi (Third Group) in 1893, in order to differentiate themselves from the other two groups, the Pirveli Dasi (First Group) and the Meori Dasi (Second Group). These were two other groups of intellectuals that had been active in the earlier two decades. The Mesame Dasi began their activities by disseminating Marxist propaganda to the workers at various oil refineries and oil fields, along with the railway workers working on the Transcaucasian railway. All of their disseminations were done legally, through various legal channels.
They, in doing so, found two men, Afanas'ev and Stanislaw Reniger, also distributing revolutionary works to the workers. With the joining of these two, the Mesame Dasi created reading and study circles in which they taught the workers. They even translated the Russian texts into Georgian for those who could read that. Much like the other propaganda circles that were being done in Russia, the Mesame Dasi put their own spin on their teachings, from Russian history to biology. In order to keep away from legal trouble, the Dasi kept away from discussing the movement and did not attend any of the sporadic strikes among the workers.