2005–06 Serie D
The 2005–06 Serie D was the fifty-eightieth edition of the top level Italian non-professional football championship. It represented the fifth tier in the Italian football league system.Girone A
Girone B
Girone C
Girone D
Girone E
Girone F
Girone G
Girone H
Girone I
All teams promoted to 2006–07 Serie C2
Promotion playoffs
First round
Single-legged matches played at best placed club home fieldSecond round
Single-legged matches played at best placed club home fieldThird round (group stage)
Group 1
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!width="20%"|Group 2
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!width="20%"|Group 3
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!width="20%"|Semi-finals
Winning teams are automatically promoted to Serie C2Final
Relegations
;Girone A
;Girone B
- Bergamo Cenate
- Caratese
- Caravaggio
- Oggiono
;Girone C
- Centese
- Crevalcore
- Meletolese
;Girone D
- Cologna Veneta
- Cordignano
- Manzanese
- Vallagarina
;Girone E
;Girone F
;Girone G
- Aprilia
- Montenero
- Sorianese
- Spes Mentana
;Girone H
- Ariano Irpino
- Manduria
- San Paolo Bari
- Sologra
- Nuovo Terzigno
;Girone I