The 2005 All-Big Ten Conference football team consists of American football players chosen as All-Big Ten Conference players for the 2005 NCAA Division I-A football season. The conference recognizes two official All-Big Ten selectors: (1) the Big Ten conference coaches selected separate offensive and defensive units and named first- and second-team players (the "Coaches" team); and (2) a panel of sports writers and broadcasters covering the Big Ten also selected offensive and defensive units and named first- and second-team players (the "Media" team).
Guards
- Mark Setterstrom, Minnesota (Coaches-1; Media-1)
- Rob Sims, Ohio State (Coaches-1; Media-2)
- Matt Lentz, Michigan (Coaches-2; Media-1)
- Jordan Grimes, Purdue (Coaches-2)
- Leo Henige, Michigan (Media-2)
Defensive linemen
- Mike Kudla, Ohio State (Coaches-1; Media-1)
- Tamba Hali, Penn State (Coaches-1; Media-1)
- Gabe Watson, Michigan (Coaches-1; Media-1)
- Scott Paxson, Penn State (Coaches-1)
- Kenny Iwebema, Iowa (Media-1)
- Victor Adeyanju, Indiana (Coaches-2; Media-2)
- Anthony Montgomery, Minnesota (Coaches-2)
- Barry Cofield, Northwestern (Coaches-2)
- Quinn Pitcock, Ohio State (Coaches-2)
- Rob Ninkovich, Purdue (Coaches-2; Media-2)
- Jay Alford, Penn State (Media-2)
- Matthew Rice, Penn State (Media-2)
Defensive backs
- Nate Salley, Ohio State (Coaches-1; Media-1)
- Ashton Youboty, Ohio State (tie) (Coaches-1; Media-1)
- Alan Zemaitis, Penn State (Coaches-1; Media-1)
- Calvin Lowry, Penn State (tie) (Coaches-1; Media-2)
- Jovon Johnson, Iowa (Coaches-2; Media-1)
- Donte Whitner, Ohio State (Coaches-1)
- Leon Hall, Michigan (Coaches-2; Media-2)
- Eric Smith, Michigan State (Coaches-2)
- Marquise Cole, Northwestern (Media-2)
- Roderick Rogers, Wisconsin (Media-2)
Kickers
- Josh Huston, Ohio State (Coaches-1; Media-1)
- Kyle Schlicher, Iowa (Coaches-2; Media-s)
Bold = selected as a first-team player by both the coaches and media panel
Coaches = selected by Big Ten Conference coaches[1]
Media = selected by a media panel[1]
HM = Honorable mention