Svjetsko prvenstvo u motociklizmu u klasi Moto3 je svoje prvo izdanje imala u sezoni 2012. (zamijenila dotadašnju klasu 125cc). Prvenstvo je osvojio njemački vozač Sandro Cortese na motociklu KTM RC250GP, te je vozio za momčad "Red Bull KTM Ajo".
Raspored utrka i osvajači postolja 2012. godine je bilo na rasporedu 18 trkačih vikenda Svjetskog prvenstva, a na 17 su vožene utrke u klasi Moto3.
{| class="wikitable sortable" style="font-size: 80%" ! !! !!staza !! !!width="10%"|službeni naziv utrke !! !! !! !!motocikl !!pobjednik !!motocikl !!drugoplasirani !!motocikl !!trećeplasirani !!motocikl !! |- |1 ||<small> 8. travnja 2012. || Losail ||VN Katara ||<small> Commercialbank Grand Prix of Qatar | Sandro Cortese ||KTM || Maverick Viñales ||FTR Honda | Maverick Viñales ||FTR Honda || Romano Fenati ||FTR Honda || Sandro Cortese ||KTM | jumpingjack.nl, 2012 - GP, wayback arhiva motogp.com, GP Results / 2012 / Moto3 / RAC / Commercialbank Grand Prix of Qatar , pristupljeno 3. studenog 2022. resources.motogp.com, Moto3 / COMMERCIALBANK GRAND PRIX OF QATAR / Race / Classification after 18 laps = 96.84 km, objavljeno 8. travnja 2012., preuzeto 3. studenog 2022. motorsportstats.com, Moto3 / 2012 / QAT / Race, pristupljeno 3. studenog 2022. |- |2 ||<small> 29. travnja 2012. || Jerez ||VN Španjolske ||<small> Gran Premio bwin de España | Álex Rins ||Suter Honda || Romano Fenati ||FTR Honda | Romano Fenati ||FTR Honda || Luis Salom ||Kalex KTM || Sandro Cortese ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Gran Premio bwin de Espana , pristupljeno 3. studenog 2022. resources.motogp.com, Moto3 / GRAN PREMIO bwin DE ESPAÑA / Race / Classification after 23 laps = 101.729 km, objavljeno 29. travnja 2012., preuzeto 3. studenog 2022. motorsportstats.com, Moto3 / 2012 / ESP / Race, pristupljeno 3. studenog 2022. |- |3 ||<small> 6. svibnja 2012. || Estoril ||VN Portugala ||<small> Grande Prémio de Portugal Circuito Estoril | Sandro Cortese ||KTM || Sandro Cortese ||KTM | Sandro Cortese ||KTM || Maverick Viñales ||FTR Honda || Luis Salom ||Kalex KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Grande Prémio de Portugal Circuito Estoril , pristupljeno 3. studenog 2022. resources.motogp.com, Moto3 / GRANDE PREMIO DE PORTUGAL CIRCUITO ESTORIL / Race / Classification after 23 laps = 96.186 km, objavljeno 6. svibnja 2012., preuzeto 3. studenog 2022. motorsportstats.com, Moto3 / 2012 / PRT / Race, pristupljeno 3. studenog 2022. |- |4 ||<small> 20. svibnja 2012. || Le Mans - Bugatti ||VN Francuske ||<small> Monster Energy Grand Prix de France | Maverick Viñales ||FTR Honda || Jakub Kornfeil ||FTR Honda | Louis Rossi ||FTR Honda || Alberto Moncayo ||Kalex KTM || Álex Rins ||Suter Honda | motogp.com, GP Results / 2012 / Moto3 / RAC / Monster Energy Grand Prix de France , pristupljeno 3. studenog 2022. resources.motogp.com, Moto3 / MONSTER ENERGY GRAND PRIX DE FRANCE / Race / Classification after 24 laps = 100.44 km, objavljeno 20. svibnja 2012., preuzeto 3. studenog 2022. motorsportstats.com, Moto3 / 2012 / FRA / Race, pristupljeno 3. studenog 2022. |- |5 ||<small> 3. lipnja 2012. || Catalunya (Barcelona) ||VN Katalonije ||<small> Gran Premi Aperol de Catalunya | Maverick Viñales ||FTR Honda || Álex Márquez ||Suter Honda | Maverick Viñales ||FTR Honda || Sandro Cortese ||KTM || Miguel Oliveira ||Suter Honda | motogp.com, GP Results / 2012 / Moto3 / RAC / Gran Premi Aperol de Catalunya , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / GRAN PREMI APEROL DE CATALUNYA / Race / Classification after 22 laps = 103.994 km, objavljeno 3. lipnja 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / CAT / Race, pristupljeno 4. studenog 2022. |- |6 ||<small> 17. lipnja 2012. || Silverstone ||VN Britanije ||<small> Hertz British Grand Prix | Maverick Viñales ||FTR Honda || Sandro Cortese ||KTM | Maverick Viñales ||FTR Honda || Luis Salom ||Kalex KTM || Sandro Cortese ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Hertz British Grand Prix , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / HERTZ BRITISH GRAND PRIX / Race / Classification after 17 laps = 100.3 km, objavljeno 17. lipnja 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / GBR / Race, pristupljeno 4. studenog 2022. |- |7 ||<small> 30. lipnja 2012. || Assen ||VN Nizozemske ||<small> Iveco TT Assen | Sandro Cortese ||KTM || Zulfahmi Khairuddin ||KTM | Maverick Viñales ||FTR Honda || Sandro Cortese ||KTM || Danny Kent ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Iveco TT Assen , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / IVECO TT ASSEN / Race / Classification after 22 laps = 99.924 km, objavljeno 30. lipnja 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / NLD / Race, pristupljeno 4. studenog 2022. |- |8 ||<small> 8. srpnja 2012. || Sachsenring ||VN Njemačke ||<small> eni Motorrad Grand Prix Deutschland | Sandro Cortese ||KTM || Sandro Cortese ||KTM | Sandro Cortese ||KTM || Alexis Masbou ||Honda || Luis Salom ||Kalex KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / eni Motorrad Grand Prix Deutschland , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / eni MOTORRAD GRAND PRIX DEUTSCHLAND / Race / Classification after 27 laps = 99.117 km, objavljeno 8. srpnja 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / DEU / Race, pristupljeno 4. studenog 2022. |- |9 ||<small> 15. srpnja 2012. || Mugello ||VN Italije ||<small> Gran Premio d'Italia TIM | Maverick Viñales ||FTR Honda || Sandro Cortese ||KTM | Maverick Viñales ||FTR Honda || Romano Fenati ||FTR Honda || Sandro Cortese ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Gran Premio d'Italia TIM , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / GRAN PREMIO D'ITALIA TIM / Race / Classification after 20 laps = 104.9 km, objavljeno 15. srpnja 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / ITA / Race, pristupljeno 4. studenog 2022. |- | ||<small> 29. srpnja 2012. || Mazda Raceway (Laguna Seca) ||VN SAD-a ||<small> Red Bull U.S. Grand Prix ||colspan="10" align="center"| nije bilo utrke Moto3 || |- |10 ||<small> 19. kolovoza 2012. || Indianapolis ||VN Indianapolisa ||<small> Red Bull Indianapolis Grand Prix | Sandro Cortese ||KTM || Romano Fenati ||FTR Honda | Luis Salom ||Kalex KTM || Sandro Cortese ||KTM || Jonas Folger ||Kalex KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Red Bull Indianapolis Grand Prix , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / RED BULL INDIANAPOLIS GRAND PRIX / Race / Classification after 23 laps = 96.968 km, objavljeno 19. kolovoza 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / IND / Race, pristupljeno 4. studenog 2022. |- |11 ||<small> 26. kolovoza 2012. || Brno ||VN Češke Republike ||<small> bwin Grand Prix České republiky | Maverick Viñales ||FTR Honda || Luis Salom ||Kalex KTM || Jonas Folger ||Kalex KTM || Luis Salom ||Kalex KTM || Sandro Cortese ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / bwin Grand Prix České republiky , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / bwin GRAND PRIX CESKE REPUBLIKY / Race / Classification after 19 laps = 102.657 km, objavljeno 26. kolovoza 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / CZE / Race, pristupljeno 4. studenog 2022. |- |12 ||<small> 16. rujna 2012. || Misano World Circuit Marco Simoncelli ||VN San Marina i Rivijere Rimini ||<small> GP Aperol di San Marino e della Riviera di Rimini | Sandro Cortese ||KTM || Álex Rins ||Suter Honda | Sandro Cortese ||KTM || Luis Salom ||Kalex KTM || Romano Fenati ||FTR Honda | motogp.com, GP Results / 2012 / Moto3 / RAC / GP Aperol di San Marino e Riviera di Rimini , pristupljeno 4. studenog 2022. resources.motogp.com, Moto3 / GP APEROL DI SAN MARINO E RIVIERA DI RIMINI / Race / Classification after 23 laps = 97.198 km, objavljeno 16. rujna 2012., preuzeto 4. studenog 2022. motorsportstats.com, Moto3 / 2012 / SMR / Race, pristupljeno 4. studenog 2022. |- |13 ||<small> 30. rujna 2012. || Motorland Aragón ||VN Aragona ||<small> Gran Premio Iveco de Aragón | Jonas Folger ||Kalex KTM || Danny Kent ||KTM | Luis Salom ||Kalex KTM || Sandro Cortese ||KTM || Jonas Folger ||Kalex KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Gran Premio Iveco de Aragóni , pristupljeno 16. studenog 2022. resources.motogp.com, Moto3 / GRAN PREMIO IVECO DE ARAGÓN / Race / Classification after 20 laps = 101.56 km , objavljeno 30. rujna 2012., preuzeto 16. studenog 2022. motorsportstats.com, Moto3 / 2012 / ARA / Race, pristupljeno 16. studenog 2022. |- |14 ||<small> 14. listopada 2012. || Twin-Ring Motegi ||VN Japana ||<small> AirAsia Grand Prix of Japan | Danny Kent ||KTM || Alessandro Tonucci ||FTR Honda | Danny Kent ||KTM || Maverick Viñales ||FTR Honda || Alessandro Tonucci ||FTR Honda | motogp.com, GP Results / 2012 / Moto3 / RAC / AirAsia Grand Prix of Japan , pristupljeno 16. studenog 2022. resources.motogp.com, Moto3 / AIRASIA GRAND PRIX OF JAPAN / Race / Classification after 20 laps = 96.02 km , objavljeno 14. listopada 2012., preuzeto 16. studenog 2022. motorsportstats.com, Moto3 / 2012 / JPN / Race, pristupljeno 16. studenog 2022. |- |15 ||<small> 21. listopada 2012. || Sepang ||VN Malezije ||<small> Malaysian Motorcycle Grand Prix | Zulfahmi Khairuddin ||KTM || Zulfahmi Khairuddin ||KTM | Sandro Cortese ||KTM || Zulfahmi Khairuddin ||KTM || Jonas Folger ||Kalex KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / Malaysian Motorcycle Grand Prix , pristupljeno 16. studenog 2022. resources.motogp.com, Moto3 / MALAYSIAN MOTORCYCLE GRAND PRIX / Race / Classification after 18 laps = 99.864 km , objavljeno 21. listopada 2012., preuzeto 16. studenog 2022. motorsportstats.com, Moto3 / 2012 / MYS / Race, pristupljeno 16. studenog 2022. |- |16 ||<small> 28. listopada 2012. || Phillip Island ||VN Australije ||<small> AirAsia Australia Grand Prix | Sandro Cortese ||KTM || Alessandro Tonucci ||FTR Honda | Sandro Cortese ||KTM || Miguel Oliveira ||Suter Honda || Arthur Sissis ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / AirAsia Australian Grand Prix , pristupljeno 17. studenog 2022. resources.motogp.com, Moto3 / AIRASIA AUSTRALIAN GRAND PRIX / Race / Classification after 23 laps = 102.304 km , objavljeno 28. listopada 2012., preuzeto 17. studenog 2022. motorsportstats.com, Moto3 / 2012 / AUS / Race, pristupljeno 17. studenog 2022. |- |17 ||<small> 11. studenog 2012. || Valencia (Ricardo Tormo) ||VN Zajednice Valencia ||<small> GP Generali de la Comunitat Valenciana | Jonas Folger ||Kalex KTM || Zulfahmi Khairuddin ||KTM | Danny Kent ||KTM || Sandro Cortese ||KTM || Zulfahmi Khairuddin ||KTM | motogp.com, GP Results / 2012 / Moto3 / RAC / GP Generali de la Comunitat Valenciana , pristupljeno 17. studenog 2022. resources.motogp.com, Moto3 / GP GENERALI DE LA COMUNITAT VALENCIANA / Race / Classification after 24 laps = 96.12 km , objavljeno 11. studenog 2012., preuzeto 17. studenog 2022. motorsportstats.com, Moto3 / 2012 / AUS / Race, pristupljeno 17. studenog 2022.
VN Britanije - također navedena kao VN Velike Britanije VN Nizozemske - također navedena kao Dutch TT, odnosno TT Assen VN San Marina i Rivijere Rimini - također navedena kao VN San Marina VN Zajednice Valencia -također navedena kao VN Valencije
Poredak za vozače Sustav bodovanja Bodove osvaja prvih 15 vozača u utrci.
pozicija u utrci 1. ||bgcolor="silver"|2. 3. ||4. 5. ||6. 7. ||8. 9. ||10. 11. ||12. 13. ||14. 15. |- !bodovi |25 ||20 ||16 ||13 ||11 ||10 ||9 ||8 ||7 ||6 ||5 ||4 ||3 ||2 ||1
{| class="wikitable sortable" style="font-size: 90%" !mj. !!vozač !!konstruktor !! !!momčad (tim) !!motocikl !!bodova |- bgcolor="gold"