Ensign Energy Services Inc. is a Canadian company that specializes in oilfield services, primarily for the crude oil, natural gas, and geothermal industries. Founded in 1987 and headquartered in Calgary, Alberta, Ensign is publicly traded on the Toronto Stock Exchange under the symbol ESI. The company operates one of the largest fleets of land-based drilling and well servicing rigs, with 302 drilling rigs and 102 service rigs globally, supported by over 5,000 employees.

Ensign offers a range of services including contract drilling, well servicing, and specialized directional drilling. Their technologically advanced rigs are designed for efficiency and safety, with a focus on customized solutions to optimize project performance. The company also integrates advanced technology through its "Ensign Edge" suite, which enhances drilling performance and crew safety. With revenues around $1.3 billion, Ensign is a significant player in the oil and gas field services sector, serving a diverse customer base across North America and internationally.