Hemifacial hyperplasia is a rare developmental anomaly exhibiting asymmetric growth of one or more body parts. It is characterized by hyperplasia of tissues rather than a hypertrophy, so it is better to call it hyperplasia rather than hypertrophy. Hemifacial hyperplasia may be associated with deformities of the skeletal system, including macrodactyly, polydactyly, syndactyly, scoliosis, tilting of the pelvis, and clubfoot. Though the etiology is unknown, various factors have been described. To date, very few cases have been reported thus far, according to the data we have collected. Through literature search, hemifacial hyperplasia was often implicated on the right side compared to the left. In contrast, we describe a case of hemifacial hyperplasia on the left side of the face in this report. This is a rare presentation for the condition which is detailed in this case report of hemifacial hyperplasia in a 50-year-old female who presented with unilateral facial enlargement since birth.