Memorial plaque to Igor Yevgenovych Tamm (1895-1971), physicist- theoretician, academician who received the 1958 Nobel Prize in Physics, jointly with Pavel Alekseyevich Cherenkov and Ilya Frank, for their 1934 discovery of Cherenkov radiation. The plaque is placed at the building of former classical men gymnasium of Elisavetgrad (now Kirovograd, regional centre of Ukraine) where I.Ye.Tamm has been educated for years of 1905-1913.