Thomas West, 3rd Baron De La Warr, English politician, Colonial Governor of Virginia (born 1577)

Thomas West, 3rd Baron De La Warr was an English colonial administrator for whom the bay, the river, and, consequently, a Native American people and U.S. state, all later called "Delaware", were named. A member of the House of Lords, from the death of his father in 1602 until his own death in 1618, he served as the governor of Virginia from 1610 to 1611.

Some of those who held the lead role as governor of Virginia never visited the New World and governed through deputies resident in the colony. Others, such as Thomas West, 3rd Baron De La Warr, held the lead role for many years but were in Virginia for only a short portion of that time and usually delegated responsibilities to others. Probably for those reasons, in many historical documents and references, the deputies and lieutenant governors who had the primary responsibility in Virginia are also often titled simply "governor." Also, transportation from England routinely took several months and occasionally, much longer. Thus, dates may appear to overlap.