This paper presents a pilot study for the automated detection of mild traumatic brain injury (mTBI) via the application of eye movement biometrics. Biometric feature vectors from multiple paradigms are evaluated for their ability to differentiate subjects diagnosed with mTBI from healthy subjects within a small subject pool. Supervised and unsupervised machine learning techniques were applied to the problem, with preliminary results indicating a potential 100% classification accuracy from a supervised learning technique and 89% classification accuracy from an unsupervised technique.According to reports from the Centers for Disease Control and Prevention [4], approximately 1.7 million people are diagnosed with TBI each year in the United States, of which nearly 75% (or 1.3 million) are incidences of mTBI. This does not account for the undiagnosed occurrences of mTBI that are thought to exceed 25% of the reported figure, or nearly 425,000 undiagnosed cases per year.Each year there are approximately 52,000 TBI-related deaths in the United States, accounting for roughly one-third (30.5%) of all injury-related deaths [4]. mTBI increases the risk of TBI [5], and can cause neurological disorders which persist years after injury [16], affecting thought, behavior, and emotion, producing physical symptoms such as fatigue, nausea, vertigo, headache, lethargy, and blurred vision [11].