Alex Smith had the most passing touchdowns in 2020, with 6 touchdowns.

alexa, who led the nfl in passing touchdowns last year
NAMESEASONTMGPTDCMPATTPCTYDSAVGYDS/GTD%INTINT%SCKSCKYRATE
Alex SmithAlex Smith2020WASWAS8616825266.71,5826.3197.82.483.22213978.5
StatMuse has season-level data for passing touchdowns going back to the 1921 season.

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