Youngest golfer ranked world number one (female)
- Who
- Lydia Ko
- What
- 17:284 year(s):day(s)
- Where
- Not Applicable
- When
- 02 February 2015
The youngest golfer, male or female, to be ranked world number one is Lydia Ko (New Zealand, b South Korea 24 April 1997), who topped the world rankings aged 17 years 284 days on 2 February 2015.
Ko is also the youngest LPGA Tour winner, having won an event aged 15 years 124 days in 2012. The youngest male golfer to be ranked No.1 is Tiger Woods, aged 21 years 167 days on 15 June 1997.