Livestock insect removal systems and related methods are disclosed. According to one aspect, a system can comprise a structure defining a pathway for passage of livestock. The system can also comprise a duct including first and second ends defining first and second openings, respectively. The first opening is positioned along the pathway such that the livestock moving through the pathway passes near the first opening. Further, the system comprises a vacuum device connected to the second opening and configured to draw air through the duct and away from an area surrounding the first opening such that one or more insects are displaced from the livestock or an area surrounding the livestock when the livestock passes near the first opening. The displaced insects can be drawn into the duct for placement in an insect trap.