2003 First-Year Player Draft
| Round | Pick | Name | Position | DOB | High School/College | 2003 Affiliate |
| 1 | 11 | Michael Aubrey | 1B/OF | 4-15-1982 | Tulane | Lake County |
| 1 | 18 | Brad Snyder | OF | 5-25-1982 | Ball State | Mahoning Valley |
| S | 31 | Adam Miller | RHP | 11-26-1984 | McKinney HS (Texas) | Burlington |
| 2 | 48 | Javier Herrera | C | 10-8-1982 | Tennessee | Mahoning Valley |
| 3 | 78 | Ryan Garko | 1B/C | 1-2-1981 | Stanford | |
| 4 | 108 | Ben Harrison | OF | 9-18-1981 | Florida | |
| 5 | 138 | Juan Valdes | OF | 6-22-1985 | Fernando Callejo HS (PR) | Burlington |
| 6 | 168 | Kevin Kouzmanoff | 3B | 7-25-1981 | Nevada | Mahoning Valley |
| 7 | 198 | Matt Davis | RHP | 7-25-1981 | Ohio State | Mahoning Valley |
| 8 | 228 | Robert Ashabraner | RHP | 2-19-1981 | California State | Mahoning Valley |
| 9 | 258 | Anthony Lunetta | SS | 10-9-1980 | Southern California | Mahoning Valley |
| 10 | 288 | Scott Roehl | RHP | 8-19-1981 | Arkansas | Mahoning Valley |
| 11 | 318 | Ryan Mulhern | LF | 11-29-1981 | South Alabama | Mahoning Valley |
| 12 | 348 | Brandon Pinckney | SS | 4-12-1982 | Sacramento CC | |
| 13 | 378 | Steven Reinhold | 2B | 3-2-1985 | Tuscola HS (N Carolina) | |
| 14 | 408 | Denton Williams | RF | 2-9-1985 | A&M Consolidated HS (TX) | |
| 15 | 438 | Ryan Spilman | C | 8-25-1984 | Mt. Vernon HS (Indiana) | |
| 16 | 468 | Aaron Laffey | LHP | 4-15-1985 | Allegany HS (Maryland) | Burlington |
| 17 | 498 | Jeff Pry | RHP | Franklin HS (Oregon) | ||
| 18 | 528 | Dustin Barnhard | RHP | 6-28-1983 | Connors CC | |
| 19 | 558 | Joseph Huskins | C | 3-25-1984 | Cypress JC | |
| 20 | 588 | Shane Matthews | RHP | 3-28-1985 | St. Stephens HS (N Carolina) | |
| 21 | 618 | Adam Brandenburg | LHP | 8-17-1981 | Kennesaw State | Mahoning Valley |
| 22 | 648 | Matthew Elliot | RHP | 4-6-1984 | Dixie College (JC) | |
| 23 | 678 | Timothy Montgomery | CF | 6-2-1982 | Hawaii | |
| 24 | 708 | Ryan Goleski | 1B | 3-19-1982 | Eastern Michigan | Mahoning Valley |
| 25 | 738 | Travis Debondt | LHP | 10-28-1983 | Bakersfield College (JC) | |
| 26 | 768 | Andrew Johnston | RHP | 4-20-1984 | Jefferson College (JC) | |
| 27 | 798 | Michael Felix | LHP | 8-13-1985 | Rutherford HS (Florida) | |
| 28 | 828 | Jason James | CF | 8-30-1984 | Kishwaukee College (JC) | |
| 29 | 858 | Brett Parker | SS | 8-27-1980 | South Alabama | Mahoning Valley |
| 30 | 888 | James Smith | RHP | 10-24-1982 | Merced College (JC) | |
| 31 | 918 | Mark Harris | RHP | 2-17-1981 | William and Mary | Mahoning Valley |
| 32 | 948 | Steven Jackson | RHP | 3-15-1982 | Clemson | |
| 33 | 978 | Joseph Reid | RHP | 9-7-1982 | St. Johns | |
| 34 | 1008 | Roger Lincoln | LHP | 7-19-1980 | Stetson | Mahoning Valley |
| 35 | 1038 | Bart Babineaux | LF | 12-31-1982 | El Camino College (JC) | |
| 36 | 1068 | Jared Goedert | 3B | 5-25-1985 | Concordia HS (Kansas) | |
| 37 | 1098 | Zach Wallis | LHP | 3-20-1984 | Enid HS (Oklahoma) | |
| 38 | 1128 | Neall French | C | 8-5-1983 | Grand Rapids CC | |
| 39 | 1158 | James Rapoport | CF | 6-25-1985 | Chaminade Prep HS (CA) | |
| 40 | 1188 | Adrian Schau | RHP | 1-8-1982 | Villanova | |
| 41 | 1218 | Robert Leonhardt | RHP | 9-27-1984 | Cypress Fairbanks HS (TX) | |
| 42 | 1247 | Adam Hanson | RHP | 6-8-1981 | Wake Forest | Mahoning Valley |
| 43 | 1276 | Joseph Weaver | RHP | 8-17-1981 | Oklahoma State | Mahoning Valley |
| 44 | 1304 | Kyle Muschara | RHP | 9-8-1984 | Lassiter HS (Georgia) | |
| 45 | 1331 | Rafael Cotto | RF | 11-30-1985 | Miguel Such HS (PR) | |
| 46 | 1358 | James O'Neill | LHP | 6-19-1985 | Milford HS (Michigan) | |
| 47 | 1385 | Chad Corona | SS | 5-18-1982 | San Diego State | |
| 48 | 1412 | Jordan Karnovsky | LF | 10-16-1985 | Christian Brothers HS (CA) | |
| 49 | 1438 | David Horlacher | RHP | 6-22-1982 | Dixie College (JC) | |
| 50 | 1464 | Seth Button | RF | 8-16-1984 | Elk Lake HS (PA) |
Signings
7-2-03: Signed 16th Round Pick
Aaron Laffey;
Assigned him to Burlington (R+)
6-28-03: Signed 43rd Round Pick
Joe Weaver;
Assigned him to Mahoning Valley (SSA)
6-17-03: Signed 11th Round Pick Ryan Mulhern; Assigned him to Mahoning Valley (SSA)
6-15-03: Signed 7th Round Pick Matt Davis; Assigned him to Mahoning Valley (SSA)
6-15-03: Signed 8th Round Pick Bo Ashabraner; Assigned him to Mahoning Valley (SSA)
6-15-03: Signed 42nd Round Pick Adam Hanson; Assigned him to Mahoning Valley (SSA)
6-14-03: Signed 1st Round Pick (18th Overall) Brad Snyder; Assigned him to Mahoning Valley (SSA)
6-14-03: Signed 5th Round Pick Juan Valdes; Assigned to Burlington (R+)
6-14-03: Signed 1st Round Pick (11th Overall) Michael Aubrey ($2.1M); Assigned to Lake County (A-)
6-10-03: Signed 2nd Round Pick
Javi Herrera
($750,000); Assigned to Mahoning Valley (SSA)
6-10-03: Signed 6th Round Pick
Kevin
Kouzmanoff ($45,000); Assigned to Mahoning Valley (SSA)
6-10-03: Signed 10th Round Pick Scott Roehl; Assigned to Mahoning Valley (SSA)
6-10-03: Signed 12th Round Pick Brandon Pinckney; Assigned to Burlington (R+)
6-10-03: Signed Sandwich Pick Adam Miller ($1.1M); Assigned to Burlington (R+)
6-10-03: Signed 21st Round Pick Adam Brandenburg; Assigned to Mahoning Valley (SSA)
6-10-03: Signed 24th Round Pick Ryan Goleski; Assigned to Mahoning Valley (SSA)
6-10-03: Signed 29th Round Pick Brett Parker; Assigned to Mahoning Valley (SSA)
6-10-03: Signed 31st Round Pick Mark Harris; Assigned to Mahoning Valley (SSA)
6-10-03: Signed 34th Round Pick
Roger
Lincoln; Assigned to Mahoning Valley (SSA)