Alassane Ndao (born 31 December 1996) is a Senegalese professional footballer who plays as a winger for Süper Lig club Konyaspor.
Ndao made his professional debut with Fatih Karagümrük in a 3-0 Süper Lig win over Yeni Malatyaspor on 12 September 2020.
On 31 July 2021, Ndao joined Saudi Arabian club Al-Ahli.
On 21 January 2022, Ndao joined Antalyaspor on a loan spell, until the end of the season.
On 11 August 2023, he signed with Süper Lig club ðstanbulspor.
On 13 November 2025, Ndao was banned from playing for 12 months for his involvement in the 2025 Turkish football betting scandal.
Ndao made his debut for Senegal on 22 July 2017 in African Nations Championship qualifier against Sierra Leone, and scored in 51st-minute.