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Two works of Thomsen, who transcribed and publicized the inscriptions in Kok Turk alphabeth for the first time, are very popular. These are:1. V. Thomsen, Inscriptions de l 'Orkhon dechiffrees, Memories de la Societe Finno-Ougrienne, V, Helsingfors, 1896.2. V. Thomsen, Turcica, Etudes Concemant l'interpretation des Inscriptions Turques de la Mongolie et de la Siberie, Memories de la Societe Finno-Ougrienne, XXXVII, Helsingfors, 1916.There does not exist a dictionary in the two works of Thomsen which were also translated in to Turkish. In our study, a dictionary of these two works of Thomsen was prepared in Turkish. By means of this dictionary, it will be easy to identify what meanings Thomsen assigned to any word.