Does indigestion cause neck and jaw pain?

Careful. Pain from angina (ischemia to heart muscle) can fell like indigestion. Also can occur in the arms, shoulders, neck, jaw, throat, or back. I'd recommend an MD exam ASAP.
Not likely. Pain in the upper extremities such as jaw/neck does not usually refer from a lower area like the abdomen. If you believe that you have indigestion then try some peptobismol to see if it makes a difference with your jaw/neck pain. See your dentist to have your jaw checked. Sometimes TMJ problems can refer pain to the jaw or neck.