2014 Bills pre-draft visitors
| Player | Pos. | College | Rd | # | Team |
| Sammy Watkins | WR | Clemson | 1 | 4 | Bills |
| Jake Matthews | OT | Texas A&M | 1 | 6 | Falcons |
| Mike Evans | WR | Texas A&M | 1 | 7 | Buccaneers |
| Eric Ebron | TE | North Carolina | 1 | 10 | Lions |
| Odell Beckham, Jr. | WR | LSU | 1 | 12 | Giants |
| Kyle Fuller | CB | Virginia Tech | 1 | 14 | Bears |
| Ryan Shazier | LB | Ohio State | 1 | 15 | Steelers |
| Zack Martin | OT | Notre Dame | 1 | 16 | Cowboys |
| C.J. Mosley | LB | Alabama | 1 | 17 | Ravens |
| Bradley Roby | CB | Ohio State | 1 | 31 | Broncos |
| Austin Seferian-Jenkins | TE | Washington | 2 | 38 | Buccaneers |
| Cyrus Kouandjio | OT | Alabama | 2 | 44 | Bills |
| Troy Niklas | TE | Notre Dame | 2 | 52 | Cardinals |
| Jeremy Hill | RB | LSU | 2 | 55 | Bengals |
| Cody Latimer | WR | Indiana | 2 | 56 | Broncos |
| Carlos Hyde | RB | Ohio State | 2 | 57 | 49ers |
| Marcus Martin | C | USC | 3 | 70 | 49ers |
| Scott Crichton | DE | Oregon State | 3 | 72 | Vikings |
| Preston Brown | LB | Louisville | 3 | 73 | Bills |
| Phillip Gaines | CB | Rice | 3 | 87 | Chiefs |
| Terrance West | RB | Towson | 3 | 94 | Browns |
| Jerick McKinnon | RB | Georgia Southern | 3 | 96 | Vikings |
| Bashaud Breeland | CB | Clemson | 4 | 102 | Redskins |
| Ross Cockrell | CB | Duke | 4 | 109 | Bills |
| Walt Aikens | CB | Liberty | 4 | 125 | Dolphins |
| Lache Seastrunk | RB | Baylor | 6 | 186 | Redskins |
| Laurent Duvernay-Tardif | OT | McGill | 6 | 200 | Chiefs |
| Terrance Cobb | RB | Cumberlands | UDFA | Jaguars | |
| Charles Siddoway | OT | Mississippi State | UDFA | ||
2013 Bills pre-draft visitors
| Player | Pos. | College | Rd | # | Team |
| Dion Jordan | OLB | Oregon | 1 | 3 | Dolphins |
| Barkevious Mingo | OLB | LSU | 1 | 6 | Browns |
| Kenny Vaccaro | S | Texas | 1 | 15 | Saints |
| EJ Manuel | QB | Florida State | 1 | 16 | Bills |
| Jarvis Jones | OLB | Georgia | 1 | 17 | Steelers |
| Cordarrelle Patterson | WR | Tennessee | 1 | 29 | Vikings |
| Alec Ogletree | ILB | Georgia | 1 | 30 | Rams |
| Justin Hunter | WR | Tennessee | 2 | 34 | Titans |
| Geno Smith | QB | West Virginia | 2 | 39 | Jets |
| Kevin Minter | ILB | LSU | 2 | 45 | Cardinals |
| Jamie Collins | ILB | Southern Mississippi | 2 | 52 | Patriots |
| Vance McDonald | TE | Rice | 2 | 55 | 49ers |
| Mike Glennon | QB | North Carolina State | 3 | 73 | Buccaneers |
| Matt Barkley | QB | USC | 4 | 98 | Eagles |
| Tyler Wilson | QB | Arkansas | 4 | 112 | Raiders |
| Landry Jones | QB | Oklahoma | 4 | 115 | Steelers |
| Phillip Thomas | S | Fresno State | 4 | 119 | Redskins |
| Kyle Juszczyk | FB | Harvard | 4 | 130 | Ravens |
| Jonathan Meeks | S | Clemson | 5 | 143 | Bills |
| Cooper Taylor | S | Richmond | 5 | 152 | Giants |
| Ryan Swope | WR | Texas A&M | 6 | 174 | Cardinals |
| Ryan Griffin | TE | Connecticut | 6 | 201 | Texans |
| Jeff Tuel | QB | Washington State | UDFA | Bills | |
| Tyler Bray | QB | Tennessee | UDFA | Chiefs | |
| Matt Scott | QB | Arizona | UDFA | Jaguars | |
| Da'Rick Rogers | WR | Tennessee Tech | UDFA | Bills | |
| Zach Rogers | WR | Tennessee | UDFA | Jets | |
| Russell Shepard | WR | LSU | UDFA | Eagles | |
| Ja'Gared Davis | ILB | Southern Methodist | UDFA | Texans | |
| Malcolm Bronson | S | McNeese State | UDFA | Chiefs | |
2012 Bills pre-draft visitors
| Player | Pos. | College | Rd | # | Team |
| Trent Richardson | RB | Alabama | 1 | 3 | Browns |
| Matt Kalil | OT | USC | 1 | 4 | Vikings |
| Justin Blackmon | WR | Oklahoma State | 1 | 5 | Jaguars |
| Morris Claiborne | CB | LSU | 1 | 6 | Cowboys |
| Mark Barron | S | Alabama | 1 | 7 | Buccaneers |
| Ryan Tannehill | QB | Texas A&M | 1 | 8 | Dolphins |
| Luke Kuechly | LB | Boston College | 1 | 9 | Panthers |
| Stephon Gilmore | CB | South Carolina | 1 | 10 | Bills |
| Fletcher Cox | DT | Mississippi State | 1 | 12 | Eagles |
| Bruce Irvin | DE | West Virginia | 1 | 15 | Seahawks |
| Dre Kirkpatrick | CB | Alabama | 1 | 17 | Bengals |
| Melvin Ingram | DE | South Carolina | 1 | 18 | Chargers |
| Shea McClellin | DE | Boise State | 1 | 19 | Bears |
| Chandler Jones | DE | Syracuse | 1 | 21 | Patriots |
| Dont'a Hightower | LB | Alabama | 1 | 25 | Patriots |
| Whitney Mercilus | DE | Illinois | 1 | 26 | Texans |
| Brian Quick | WR | Appalachian State | 2 | 33 | Rams |
| Cordy Glenn | OT | Georgia | 2 | 41 | Bills |
| Jonathan Martin | OT | Stanford | 2 | 42 | Dolphins |
| Mike Adams | OT | Ohio State | 2 | 56 | Steelers |
| Brock Osweiler | QB | Arizona State | 2 | 57 | Broncos |
| Vinny Curry | DE | Marshall | 2 | 59 | Eagles |
| Josh Robinson | CB | Central Florida | 3 | 66 | Vikings |
| Olivier Vernon | DE | Miami (FL) | 3 | 72 | Dolphins |
| Russell Wilson | QB | Wisconsin | 3 | 75 | Seahawks |
| Jamell Fleming | CB | Oklahoma | 3 | 80 | Cardinals |
| Kirk Cousins | QB | Michigan State | 4 | 102 | Redskins |
| DeQuan Menzie | CB | Alabama | 5 | 146 | Chiefs |
| Tank Carder | LB | TCU | 5 | 147 | Bills |
| James Brown | OT | Troy | UDFA | Bears | |