Oymaağaç may refer to:

• Oymaağaç, Ağaçören, village in Aksaray Province, Turkey
• Oymaağaç, Beypazarı, village in Ankara Province, Turkey
• Oymaağaç, Merzifon, village in Amasya Province, Turkey
• Oymaağaç, Vezirköprü, village in Samsun Province, Turkey

• True indigo
• True ingredients
• True Ingredients
• True Inside
• True jellyfish
• True Jesus Church
• True Jesus Church in Taiwan
• True Justice
• True Justice (South Korean TV series)
• True Knowledge
• True Law
• True law
• True length
• True levelers
• True Liberty
• True Lies (game)
• True Lies: Music From The Motion Picture
• True Lies (The Vampire Diaries)
• True Light Pentecost Church
• True Link
• Truellum paludosum
• Truellum perfoliatum
• Truellum sagittatum
• Truellum sibiricum
• Truellum sieboldii