Joe Montana has the most career passing yards for the 49ers, with 35,124 yards.

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MontanaBrodieYoungGarciaTittleSmithKaepernickGaroppoloDeBergSpurrierMullensRattayAlbertHillBeathardPlunkettGrbacGabbertBonoDorseyMiraSneadO'Sullivan35.1k31.5k29.9k16.4k16.0k14.3k12.3k9.7k7.2k5.3k4.7k3.9k3.8k3.5k3.5k3.3k3.1k3.0k2.6k1.7k1.7k1.7k1.7k
NAMEGPYDSCMPATTPCTAVGYDS/GTDTD%INTINT%SCKSCKYRATE
Joe MontanaJoe Montana16735,1242,9294,60063.77.6210.32445.31232.72821,90293.5
John BrodieJohn Brodie20131,5482,4694,49155.07.0157.02144.82245.04738072.3
Steve YoungSteve Young15029,9072,4003,64865.88.2199.42216.1862.42901,571101.4
Jeff GarciaJeff Garcia7416,4081,4492,36061.47.0221.71134.8562.410357088.3
Y.A. TittleY.A. Tittle11216,0161,2262,19455.97.3143.01084.91346.170.0
Alex SmithAlex Smith8014,2801,2902,17759.36.6178.5813.7632.91961,18279.1
Colin KaepernickColin Kaepernick6912,2711,0111,69259.87.3177.8724.3301.81711,06088.9
Jimmy GaroppoloJimmy Garoppolo419,6947831,16367.38.3236.4595.1322.88658198.4
Steve DeBergSteve DeBerg397,2206701,20155.86.0185.1373.1605.04838963.1
Steve SpurrierSteve Spurrier925,25044184052.56.357.1333.9485.75036761.2
Nick MullensNick Mullens194,71438760064.57.9248.1254.2223.73626687.2
Tim RattayTim Rattay323,94135658660.86.7123.2244.1183.15935481.6
Frankie AlbertFrankie Albert363,84731660152.66.4106.9274.5437.257.7
Shaun HillShaun Hill183,49032252261.76.7193.9234.4112.14728687.3
C.J. BeathardC.J. Beathard193,46929149758.67.0182.6183.6132.64636881.1
Jim PlunkettJim Plunkett263,28525449151.76.7126.3224.5306.15649162.5
Elvis GrbacElvis Grbac423,09828443066.07.273.8184.2163.71610285.6
Blaine GabbertBlaine Gabbert152,99427244960.66.7199.6163.6132.93621280.2
Steve BonoSteve Bono342,55822035961.37.175.2143.971.91712387.7
Ken DorseyKen Dorsey111,71217131654.15.4155.682.5113.51912263.7
George MiraGeorge Mira471,71111224046.77.136.4177.1145.870.0
Norm SneadNorm Snead121,70513823758.27.2142.1114.6114.61812476.7
J.T. O'SullivanJ.T. O'Sullivan91,67812822058.27.6186.483.6115.03219773.6
Tom OwenTom Owen141,64511223547.77.0117.5114.7177.23125956.4
Jeff KempJeff Kemp101,55411920059.57.8155.4115.584.085685.7
StatMuse has season-level data for passing yards going back to the 1932 season.