Herman II, Count of Weimar-Orlamünde (c. 1184 – 27 December 1247) was a member of the House of Ascania.
He was the youngest son of Count Siegfried III (c. 1155 – 1206) and his wife Sophie (1159 – c. 1208), a daughter of King Valdemar I of Denmark.
[2] He came increasingly into conflict with Landgrave Herman I of Thuringia, who occupied Schauenforst Castle between Orlamünde and Rudolstadt.
Despite the continuing troubles with Thuringia, Herman II managed to expand his territorial sovereignty.
Herman II married Princess Beatrix of Andechs-Merania, the daughter of Duke Otto I of Merania.