The fastest man in the world as of 2025 is Noah Lyles. He won the men's 100-meter gold at the 2024 Paris Olympics with a time of 9.784 seconds, making him the first American to win the Olympic 100m since 2004 and setting a new standard in the event

. However, in the current 2025 season, South African sprinter Akani Simbine is leading the world rankings with a 100m time of 9.90 seconds, despite running into a headwind. He is considered the fastest athlete in the world for 2025 so far and has been performing exceptionally well in the 4x100m relay as well

. Usain Bolt remains the all-time fastest man with world records in the 100m and 200m, but he retired in 2017

. In summary:

• Noah Lyles is the reigning Olympic 100m champion and fastest man as of mid-2024-2025.
• Akani Simbine is currently the fastest sprinter in the 2025 season based on recent performances.
• Usain Bolt holds the all-time world records for the 100m and 200m sprints.