| Competition: | Campeonato Brasileiro Série B |
| Season: | 1972 |
| Winners: | Sampaio Corrêa |
| Matches: | 134 |
| Total Goals: | 299 |
| League Topscorer: | Pelezinho (Sampaio Corrêa) - 8 goals |
| Biggest Home Win: | Sampaio Corrêa 5-0 Flamengo-PI (October 29, 1972) Campinense 6-1 Calouros do Ar (November 12, 1972) |
| Biggest Away Win: | Moto Club 0-3 Fortaleza (September 17, 1971) Fluminense de Feira 0-3 Atlético de Alagoinhas (October 22, 1972) Calouros do Ar 0-3 América-RN (November 18, 1972) América-PE 1-4 América-RN (December 10, 1972) |
| Prevseason: | 1971 |
| Nextseason: | 1980 |
The football (soccer) Campeonato Brasileiro Série B 1972, the second level of Brazilian National League, was played from September 10 to December 17, 1972. The competition had 23 clubs. All of the participating clubs were from the Northeast region.
Sampaio Corrêa beat Campinense on the finals, and was declared 1972 Brazilian Série B champions. The relegation and promotion system had not been implemented yet, so no clubs were promoted. As the First division of the championship began to grow in number of clubs, this edition of the second division was the last one until 1980.