Top 10 Largest firms in Washington DC 01 Covington & Burling: 822 Lawyers In DC 02 Hogan Lovells U.S LLP: 535 Lawyers In DC 03 Arnold & Porter Kay Scholer LLP: 412 Lawyers In DC 04 Latham & Watkins LLP: 359 Lawyers In DC 05 Morgan, Lewis & Bockis LLP: 351 Lawyers In DC 06 Crowell & Moring LLP: 312 Lawyers In DC 07 WilmerHale: 306 Lawyers In DC 08 Sidley Austin: 298 Lawyers In DC 09 Williams & Connolly: 296 Lawyers In DC 10 Venable LLP: 289 Lawyers In DC