In many Western cultures, the wedding ring finger is designated as the fourth finger on the left hand. This tradition originated from the belief that this finger had a vein that ran directly to the heart, known as the Vena Amoris, meaning "vein of love". However, it is important to note that there are no laws surrounding which finger you should wear your wedding ring on, and the ring finger is not what matters.

Once a person is married, the wedding ring is typically worn on the same finger as the engagement ring, which is usually the fourth finger on the left hand. However, some cultures and countries wear their wedding jewelry on the right-hand ring finger instead.

In summary, the wedding ring is traditionally worn on the fourth finger on the left hand in many Western cultures, but there are no strict rules about which finger to wear it on.