| Competition: | Primera B Nacional |
| Season: | 1993–94 |
| Winners: | Gimnasia y Esgrima (J) (1st divisional title) |
| Promoted: | Gimnasia y Esgrima (J) Talleres (C) |
| Relegated: | Ituzaingó Sarmiento (J) Chaco For Ever |
| League Topscorer: | Dante Fernández (29 goals) |
| Prevseason: | 1992–93 |
| Nextseason: | 1994–95 |
The 1993–94 Argentine Primera B Nacional was the eight season of second division professional of football in Argentina. A total of 22 teams competed; the champion and runner-up were promoted to Argentine Primera División.
Gimnasia y Esgrima (J) was declared champion and was automatically promoted to Primera División, and the teams placed 2nd to 8th qualified for the Second Promotion Playoff.
The Second Promotion Playoff or Torneo Reducido was played by the teams placed 2nd to 8th in the overall standings: Quilmes (2nd), San Martín (T) (3rd), Colón (4th), Talleres (C) (5th), Nueva Chicago (6th), Instituto (7th) and Atlético Tucumán (8th), and the champion of Primera B Metropolitana: Chacarita Juniors. The winning team was promoted to Primera División.
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| width=28 | width=185 | Team | width=50 | width=50 | width=50 | width=50 | width=50 | width=50 | Situation | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gimnasia y Esgrima (J) | — | — | 58 | 58 | 42 | Indirect | ||||||||||
| 2 | Colón | 52 | 56 | 47 | 155 | 126 | Direct | ||||||||||
| 3 | Quilmes | — | 45 | 55 | 100 | 84 | Direct | ||||||||||
| 4 | San Martín (T) | 51 | — | 47 | 98 | 84 | Indirect | ||||||||||
| 5 | Talleres (C) | — | — | 47 | 47 | 42 | Indirect | ||||||||||
| 6 | Nueva Chicago | 49 | 44 | 46 | 139 | 126 | Direct | ||||||||||
| 7 | All Boys | — | — | 45 | 45 | 42 | Direct | ||||||||||
| 8 | Almirante Brown | 52 | 45 | 38 | 135 | 126 | Direct | ||||||||||
| 9 | Instituto | 47 | 41 | 46 | 134 | 126 | Indirect | ||||||||||
| 10 | Atlético Tucumán | 46 | 42 | 45 | 133 | 126 | Indirect | ||||||||||
| 11 | Arsenal | — | 45 | 43 | 88 | 84 | Direct | ||||||||||
| 12 | Unión | — | 43 | 43 | 86 | 84 | Direct | ||||||||||
| 13 | Douglas Haig | 50 | 34 | 41 | 125 | 126 | Indirect | ||||||||||
| 14 | Central Córdoba (R) | 42 | 46 | 34 | 122 | 126 | Direct | ||||||||||
| 15 | Sportivo Italiano | 38 | 48 | 36 | 122 | 126 | Direct | ||||||||||
| 16 | Deportivo Morón | 41 | 35 | 45 | 121 | 126 | Direct | ||||||||||
| 17 | Atlético de Rafaela | 35 | 43 | 42 | 120 | 126 | Indirect | ||||||||||
| 18 | Deportivo Laferrere | 39 | 40 | 39 | 118 | 126 | Direct | ||||||||||
| 19 | Talleres (RE) | 44 | 41 | 32 | 117 | 126 | Direct | ||||||||||
| 20 | Chaco For Ever | 46 | 41 | 29 | 116 | 126 | Liga Chaqueña de fútbol | Indirect | |||||||||
| 21 | Sarmiento (J) | — | — | 36 | 36 | 42 | Primera B Metropolitana | Direct | |||||||||
| 22 | Ituzaingó | — | 38 | 30 | 68 | 84 | Direct |
Note: Clubs with indirect affiliation with AFA are relegated to their respective league of his province according to the Argentine football league system, while clubs directly affiliated face relegation to Primera B Metropolitana. Clubs with direct affiliation are all from Greater Buenos Aires, with the exception of Newell's, Rosario Central, Central Córdoba and Argentino de Rosario, all from Rosario, and Unión and Colón from Santa Fe.