John Flannery is currently the soil and water conservation director for Loudoun County. He was first elected in 2015 and has been in office for two terms.

John is an attorney. He works law firm at Campbell Flannery. He used to be chief of staff for congresswoman Zoe Lofgren, special counsel to the U. S. Senate Judiciary Committee, special counsel to the U.S. Senate Labor Committee, an attorney at law firm Poletti Friedin Prashker Feldman & Gartner, and as a federal prosecutor.

John has a bachelor's degree in physics from Fordham University, a bachelor's degree in industrial engineering from Columbia University, a law degree from Columbia University, and a master's degree in information science from George Washington University. He lives with his wife.