Trichilemmal cysts are rare adnexal lesions, commonly occurring on scalp. We present a case of 13 year old female patient presenting with left sided neck swelling since 3months, swelling was 20×20 mm in size, soft to firm freely mobile, non-tender in the left submandibular region. USG showed an anechoeic cystic lesion with hyperechoeic content in the left submandibular gland. Surgical excision was done; histopathology confirmed it to be trichilemmal cyst.