The Seal of Solomon or Ring of Solomon (Hebrew: חותם שלמה, Ḥotam Shlomo; Arabic: خاتم سليمان, Khātam Sulaymān) is the legendary signet ring attributed to the Israelite king Solomon in medieval mystical traditions, from which it developed in parallel within Jewish mysticism, Islamic mysticism and Western occultism.

It is often depicted in the shape of either a pentagram or a hexagram. In religious lore, the ring is variously described as having given Solomon the power to command the supernatural, including shedim and jinn, and also the ability to speak with animals. Due to the proverbial wisdom of Solomon, it came to be seen as an amulet or talisman, or a symbol or character in medieval magic and Renaissance magic, occultism, and alchemy.

The seal is the predecessor to the Star of David, a Jewish symbol, and in modern vexillology, it features on the Flag of Israel. The pentagram on the Flag of Morocco also represents the seal. The Seal of Solomon was also depicted on the flag of Nigeria during British colonial rule.