Castor is a Greek name that is derived from Greek mythology, where Castor was one of the twin brothers known as the Dioscuri. In Greek mythology, Castor was known for his skill in taming and training horses. The name Castor is often associated with qualities such as strength, bravery, and athleticism. It is a strong and masculine name that exudes a sense of power and determination. Castor is a unique and timeless name that has been used for centuries and continues to be a popular choice for parents looking for a strong name for their son.