Cornelius Kipkoech Tuwei (born 24 May 1993) is a Kenyan middle-distance runner specialising in the 800 metres.^[1]

Outdoor

• 400 metres – 46.94 (Nairobi 2016)
• 600 metres – 1:15.40 (Liège 2023)
• 800 metres – 1:43.76 (Heusden-Zolder 2021)
• 1000 metres – 2:16.89 (Székesfehérvár 2018)
• 1500 metres – 3:35.34 (Berlin 2019)

Indoor

• 800 metres – 1:46.47 (Toruń 2021)
• 1500 metres – 3:38.91 (Luxembourg 2021)