Where to continue the One Punch Man manga

One Punch Man by ONE & Yusuke Murata, 2012. The manga is still ongoing.

• Season 1 (12 episodes): Continue the manga from chapter 38 in volume 8.
• Season 2 (12 episodes): Continue the manga from chapter 86 in volume 17.
• Season 3 Part 1 (12 episodes): Continue the manga from chapter 116 in volume 24. The finale is heavily cut together and only uses fragments of chapters 116 and 117, so read them in full for the fights and scenes it skipped.