Brett Favre has the most turnovers by a quarterback in a season, with 36 turnovers in 2005.

most turnovers by a qb in the 2017nfl season
2005Favre2019Winston2006Kitna2010Manning2013Manning2017Kizer2003Bulger2011Freeman2009Cutler2007Manning2016Rivers2012Sanchez2011Sanchez2007Kitna2013Palmer2013Smith2011Fitzpatrick2011Grossman2011Rivers2006Grossman2006Roethlisberger2005Bledsoe2016Winston3635313029282827272726262626252525252525252524
NAMESEASONTMGPTOVLOSTINTCMPATTPCTYDSAVGYDS/GTDTD%INT%SCKSCKYRATE
Brett FavreBrett Favre2005GBGB163672937260761.33,8816.4242.6203.34.82417070.9
Jameis WinstonJameis Winston2019TBTB163553038062660.75,1098.2319.3335.34.84728284.3
Jon KitnaJon Kitna2006DETDET163192237259662.44,2087.1263.0213.53.76338879.9
Eli ManningEli Manning2010NYGNYG163052533953962.94,0027.4250.1315.84.61611785.3
Eli ManningEli Manning2013NYGNYG162922731755157.53,8186.9238.6183.34.93928169.4
DeShone KizerDeShone Kizer2017CLECLE152862225547653.62,8946.1192.9112.34.63822660.5
Marc BulgerMarc Bulger2003STLSTL152862233653263.23,8457.2256.3224.14.13728881.4
Josh FreemanJosh Freeman2011TBTB152752234655162.83,5926.5239.5162.94.02916474.6
Jay CutlerJay Cutler2009CHICHI162712633655560.53,6666.6229.1274.94.73520476.8
Eli ManningEli Manning2007NYGNYG162772029752956.13,3366.3208.5234.33.82721773.9
Philip RiversPhilip Rivers2016SDSD162652134957860.44,3867.6274.1335.73.63618887.9
Mark SanchezMark Sanchez2012NYJNYJ152681824645354.32,8836.4192.2132.94.03420966.9
Mark SanchezMark Sanchez2011NYJNYJ162681830854356.73,4746.4217.1264.83.33924378.2
Jon KitnaJon Kitna2007DETDET162662035556163.34,0687.3254.3183.23.65132080.9
Carson PalmerCarson Palmer2013ARIARI162532236257263.34,2747.5267.1244.23.84128983.9
Geno SmithGeno Smith2013NYJNYJ162542124744355.83,0466.9190.4122.74.74331566.5
Ryan FitzpatrickRyan Fitzpatrick2011BUFBUF162522335356962.03,8326.7239.5244.24.02214879.1
Rex GrossmanRex Grossman2011WASWAS132552026545857.93,1516.9242.4163.54.42520172.4
Philip RiversPhilip Rivers2011SDSD162552036658262.94,6247.9289.0274.63.43019888.7
Rex GrossmanRex Grossman2006CHICHI162552026248054.63,1936.7199.6234.84.22114273.9
Ben RoethlisbergerBen Roethlisberger2006PITPIT152522328046959.73,5137.5234.2183.84.94628075.4
Drew BledsoeDrew Bledsoe2005DALDAL162581730049960.13,6397.3227.4234.63.44929583.7
Jameis WinstonJameis Winston2016TBTB162461834556760.84,0907.2255.6284.93.23523986.1
Jay CutlerJay Cutler2014CHICHI152461837056166.03,8126.8254.1285.03.23822388.6
Joe FlaccoJoe Flacco2013BALBAL162422236261459.03,9126.4244.5193.13.64832473.1

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