K.St.G.G. means Knight, Order of Saint Gregory the Great in Religion
Similar to K.St.G.G.
ACAP - Adventist Composers, Arrangers, and PoetsACAP - Associazione Cabotaggio Armatori Partenopei
ACC - Arusha Community Church
ACC - Associated Catholic Colleges
ACC - Archdeaconry Court of Cornwall
ACC - Austin Chinese Church
ACC - Anglican Church of Canada
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