2012 ATP Challenger Tour Finals – Singles

Cedrik-Marcel Stebe was the champion in 2011, but did not qualify for the event in 2012, since he played mostly ATP World Tour tournaments in that season. Guido Pella defeated Adrian Ungur 6–3, 6–7(4–7), 7–6(7–4) in the final to win the title.

Seeds

 * 1) 🇧🇷 Thomaz Bellucci (round robin, withdrew because of a shoulder injury)
 * 2) 🇮🇹 Paolo Lorenzi (round robin)
 * 3) 🇷🇴 Victor Hănescu (semifinals)
 * 4) 🇪🇸 Rubén Ramírez Hidalgo (round robin)
 * 5)  Aljaž Bedene (semifinals)
 * 6) 🇷🇴 Adrian Ungur (final)
 * 7) 🇦🇷 Guido Pella (champion)
 * 8)  Gastão Elias (round robin)

Alternates

 * 1) 🇧🇷 Thiago Alves (replaced Thomaz Bellucci, round robin)
 * 2) 🇧🇷 Rogério Dutra da Silva (did not play)

Green group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''

Yellow group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''