john grubb parke (september 22, 1827 – december 16, 1900) was a united states army engineer and a union general in the american civil war. parke's civil war service was closely associated with ambrose e. burnside, often serving him as chief of staff in major engagements such as antietam, fredericksburg and the overland campaign. parke also held significant field commands during burnside's north carolina expedition, vicksburg and the battle of fort stedman as well as brief stints in command of the army of the potomac.