Alassane Seydou

{{Short description|Nigerien swimmer (born 1993)}}

{{Use dmy dates|date=May 2021}}

{{Infobox swimmer

| name = Alassane Seydou

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| nationality = Nigerien

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| birth_date = {{birth date and age|1993|9|9|df=yes}}

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Alassane Seydou Lancina (born 9 September 1993) is a Nigerien swimmer.{{cite web|url=https://www.olympedia.org/athletes/145658 |title=Alassane Seydou |work=Olympedia |access-date=31 July 2021}}{{Cite news|url=https://www.lesahel.org/seydou-lassina-alassane-olympien-detenteur-du-meilleur-chronometre-du-niger-la-pratique-du-sport-nautique-plus-quune-ambition-chez-seydou-lassina-alassane/|newspaper={{ill|Le Sahel|de}}|date=8 November 2023|title=Seydou Lassina Alassane Olympien détenteur du meilleur...|language=French}} He competed in the men's 50 metre freestyle at the 2020 Summer Olympics.{{cite web |url=https://olympics.com/tokyo-2020/olympic-games/resOG2020-/pdf/OG2020-/SWM/OG2020-_SWM_C74A_SWMM50MFR-------------HEAT--------.pdf |title=Men's 50m Freestyle: Result summary |work=Tokyo 2020 |access-date=31 July 2021 |archive-date=30 July 2021 |archive-url=https://web.archive.org/web/20210730115947/https://olympics.com/tokyo-2020/olympic-games/resOG2020-/pdf/OG2020-/SWM/OG2020-_SWM_C74A_SWMM50MFR-------------HEAT--------.pdf |url-status=dead }}