Superior Gluteal Nerve Entrapment Syndrome is an underrecognized cause of lateral hip pain, gait disturbance, and weakness of hip abduction. It occurs when the superior gluteal nerve becomes compressed in the deep gluteal space, often near the suprapiriformis foramen. Patients may experience buttock pain, difficulty standing on one leg, or Trendelenburg gait. Diagnosis relies on clinical assessment, imaging, and electrodiagnostic testing. Treatment options include conservative care, osteopathic manipulation, targeted rehabilitation, injections, and, in resistant cases, surgical decompression.