Ugo Nastasi (born 16 April 1993) is a French–Luxembourgish tennis player.

Nastasi has a career high ATP singles ranking of 656 achieved on 28 September 2015. He also has a career high ATP doubles ranking of 697, also achieved on 28 September 2015.

Nastasi has represented Luxembourg at Davis Cup, where he has a win–loss record of 12–15, including a 5-set win against Casper Ruud from Norway.

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Jul 2014	France F14, Bourg-en-Bresse	Futures	Clay	Maxime Forcin	Quentin Halys Maxime Hamou	6–2, 2–6, [8–10]
Loss	0–2	Sep 2014	Turkey F30, Antalya	Futures	Hard	Christophe Nickels	Alexios Halebian Tom Jomby	4–6, 2–6
Loss	0–3	Jun 2015	Belgium F2, Damme	Futures	Clay	Antoine Hoang	Sander Gille Joran Vliegen	2–6, 3–6
Loss	0–4	Jul 2015	Germany F8, Trier	Futures	Clay	Mike Scheidweiler	Maximilian Neuchrist George Von Massow	4–6, 7–5, [8–10]
Loss	0–5	Aug 2015	Egypt F28, Sharm El Sheikh	Futures	Hard	Yannick Jankovits	Libor Salaba Milos Sekulic	2–6, 2–6
Loss	0–6	Sep 2015	Tunisia F22, El Kantaoui	Futures	Hard	Romain Bauvy	Anis Ghorbel Vasko Mladenov	6–2, 5–7, [10–12]

• Ugo Nastasi at the Association of Tennis Professionals
• Ugo Nastasi at the International Tennis Federation
• Ugo Nastasi at the Davis Cup