| 26 Sept 13 | B. Sharp Billy Sharp |  SouthamptonSOU | → |  ReadingREA | Loan |
| 26 Sept 13 | B. Sharp Billy Sharp | SouthamptonSOU | → | ReadingREA | Loan |
| 02 Sept 13 | E. Mayuka Emmanuel Mayuka | SouthamptonSOU | → |  SochauxSOC | Loan |
| 02 Sept 13 | E. Mayuka Emmanuel Mayuka | SouthamptonSOU | → | SochauxSOC | Loan |
| 30 Aug 13 | D. Hammond Dean Hammond | SouthamptonSOU | → |  Leicester CityLEI | Undisclosed |
| 30 Aug 13 | D. Hammond Dean Hammond | SouthamptonSOU | → | Leicester CityLEI | Undisclosed |
| 21 Aug 13 | J. Puncheon Jason Puncheon | SouthamptonSOU | → |  Crystal PalaceCRY | Loan |
| 18 Aug 13 | P. Osvaldo Pablo Osvaldo |  AS RomaROMA | → | SouthamptonSOU | 15000000 |
| 18 Aug 13 | P. Osvaldo Pablo Osvaldo | AS RomaROMA | → | SouthamptonSOU | 15000000 |
| 17 Jul 13 | R. Chaplow Richard Chaplow | SouthamptonSOU | → |  MillwallMIL | Free |
| 17 Jul 13 | R. Chaplow Richard Chaplow | SouthamptonSOU | → | MillwallMIL | Free |
| 11 Jul 13 | V. Wanyama Victor Wanyama |  CelticCEL | → | SouthamptonSOU | Undisclosed |
| 11 Jul 13 | V. Forren Vegard Forren | SouthamptonSOU | → |  MoldeMOL | Undisclosed |
| 11 Jul 13 | V. Wanyama Victor Wanyama | CelticCEL | → | SouthamptonSOU | Undisclosed |
| 01 Jul 13 | S. Hoskins Sam Hoskins | SouthamptonSOU | → |  Yeovil TownYEO | Free |
| 01 Jul 13 | S. Hoskins Sam Hoskins | SouthamptonSOU | → | Yeovil TownYEO | Free |
| 01 Jul 13 | D. Lovren Dejan Lovren |  LyonLYON | → | SouthamptonSOU | Undisclosed |
| 01 Jul 13 | D. Lovren Dejan Lovren | LyonLYON | → | SouthamptonSOU | Undisclosed |
| 28 Mar 13 | D. Butterfield Danny Butterfield | SouthamptonSOU | → |  Bolton WanderersBOL | Loan |
| 28 Mar 13 | D. Butterfield Danny Butterfield | SouthamptonSOU | → | Bolton WanderersBOL | Loan |
| 15 Mar 13 | B. Reeves Ben Reeves | SouthamptonSOU | → |  Southend UnitedSOUT | Loan |
| 15 Mar 13 | R. Chaplow Richard Chaplow | SouthamptonSOU | → | MillwallMIL | Loan |
| 15 Mar 13 | R. Chaplow Richard Chaplow | SouthamptonSOU | → | MillwallMIL | Loan |
| 25 Feb 13 | A. Martin Aaron Martin | SouthamptonSOU | → |  Coventry CityCOV | Loan |
| 14 Feb 13 | T. Lee Tadanari Lee | SouthamptonSOU | → |  FC TokyoFCT | Loan |
| 31 Jan 13 | J. Forte Jonathan Forte | SouthamptonSOU | → |  Sheffield UnitedSHU | Loan |
| 31 Jan 13 | S. De Ridder Steve De Ridder | SouthamptonSOU | → | Bolton WanderersBOL | Loan |
| 31 Jan 13 | L. Barnard Lee Barnard | SouthamptonSOU | → |  Oldham AthleticOLD | Loan |
| 31 Jan 13 | B. Reeves Ben Reeves | SouthamptonSOU | → | Southend UnitedSOUT | Loan |
| 31 Jan 13 | S. De Ridder Steve De Ridder | SouthamptonSOU | → | Bolton WanderersBOL | Loan |
| 18 Jan 13 | V. Forren Vegard Forren | MoldeMOL | → | SouthamptonSOU | Undisclosed |
| 17 Jan 13 | D. Seaborne Daniel Seaborne | SouthamptonSOU | → |  AFC BournemouthBOU | Loan |
| 11 Jan 13 | R. Dickson Ryan Dickson | SouthamptonSOU | → |  Bradford CityBRD | Loan |
| 03 Jan 13 | S. Hoskins Sam Hoskins | SouthamptonSOU | → |  StevenageSTE | Loan |