Víctor Pecci Sr. (born October 15, 1955) is a Paraguayan former professional tennis player.

He was ranked as high as world No. 9 in singles in 1980 and world No. 31 in doubles in 1984. Pecci is famous for reaching the 1979 French Open final. He beat Guillermo Vilas in the quarterfinals and Jimmy Connors in the semifinals, but lost to three-time champion Björn Borg in the final. He also reached the semifinals in 1981 and was runner-up in Rome. Pecci won the French Open boys' singles in 1973.

Result	Year	Championship	Surface	Opponent	Score
Loss	1979	French Open	Clay	Björn Borg	3–6, 1–6, 7–6(8–6), 4–6

Note: The Australian Open was held twice in 1977, in January and December.

Result	W–L	Year	Tournament	Surface	Opponent	Score
Win	1–0	1976	Madrid, Spain	Clay	Éric Deblicker	7–5, 7–6, 3–6, 2–6, 6–4
Win	2–0	1976	Berlin, West Germany	Hard	Hans-Jürgen Pohmann	6–1, 6–2, 5–7, 6–3
Loss	2–1	1977	Munich, West Germany	Clay	Željko Franulović	1–6, 1–6, 7–6, 5–7
Win	3–1	1978	Bogotá, Colombia	Clay	Rolf Gehring	6–4, 3–6, 6–3, 6–3
Loss	3–2	1978	Buenos Aires, Argentina	Clay	José Luis Clerc	4–6, 4–6
Loss	3–3	1978	Santiago, Chile	Clay	José Luis Clerc	6–3, 3–6, 1–6
Win	4–3	1979	Nice, France	Clay	John Alexander	6–3, 6–2, 7–5
Loss	4–4	1979	French Open, Paris	Clay	Björn Borg	3–6, 1–6, 7–6(8–6), 4–6
Loss	4–5	1979	London Queen's Club, UK	Grass	John McEnroe	7–6(7–2), 1–6, 1–6
Loss	4–6	1979	Washington, D.C., U.S.	Clay	Guillermo Vilas	6–7(4–7), 6–7(3–7)
Win	5–6	1979	Quito, Ecuador	Clay	José Higueras	2–6, 6–4, 6–2
Win	6–6	1979	Bogotá, Colombia	Clay	Jairo Velasco Sr.	6–3, 6–4
Loss	6–7	1979	Johannesburg, South Africa	Hard	Andrew Pattison	6–2, 3–6, 2–6, 3–6
Loss	6–8	1980	Quito, Ecuador	Clay	José Luis Clerc	4–6, 6–1, 8–10
Win	7–8	1980	Santiago, Chile	Clay	Christophe Freyss	4–6, 6–4, 6–3
Win	8–8	1981	Viña del Mar, Chile	Clay	José Higueras	6–4, 6–0
Loss	8–9	1981	Mar del Plata, Argentina	Clay	Guillermo Vilas	6–2, 3–6, 1–2 ret.
Win	9–9	1981	Bournemouth, UK	Clay	Balázs Taróczy	6–3, 6–4
Loss	9–10	1981	Rome, Italy	Clay	José Luis Clerc	3–6, 4–6, 0–6
Win	10–10	1983	Viña del Mar, Chile	Clay	Jaime Fillol	2–6, 7–5, 6–4
Loss	10–11	1984	Kitzbühel, Austria	Clay	José Higueras	5–7, 6–3, 1–6
Loss	10–12	1985	Nice, France	Clay	Henri Leconte	4–6, 4–6

Result	W–L	Year	Tournament	Surface	Partner	Opponents	Score
Loss	0–1	1976	North Conway, U.S.	Clay	Ricardo Cano	Brian Gottfried Raúl Ramírez	3–6, 0–6
Win	1–1	1976	São Paulo, Brazil	Carpet (i)	Lito Álvarez	Ricardo Cano Belus Prajoux	6–4, 3–6, 6–3
Win	2–1	1978	Milan, Italy	Carpet (i)	José Higueras	Wojciech Fibak Raúl Ramírez	5–7, 7–6, 7–6
Loss	2–2	1978	Hamburg, West Germany	Clay	Antonio Muñoz	Wojciech Fibak Tom Okker	2–6, 4–6
Win	3–2	1978	Rome Masters, Italy	Clay	Belus Prajoux	Jan Kodeš Tomáš Šmíd	6–7, 7–6, 6–1
Win	4–2	1978	Louisville, United States	Clay	Wojciech Fibak	Victor Amaya John James	6–4, 6–7, 6–4
Win	5–2	1978	Boston, United States	Clay	Balázs Taróczy	Heinz Günthardt Van Winitsky	6–3, 3–6, 6–1
Win	6–2	1978	Vienna, Austria	Hard (i)	Balázs Taróczy	Bob Hewitt Frew McMillan	6–3, 6–7, 6–4
Loss	6–3	1978	Bogotá, Colombia	Clay	Hans Gildemeister	Álvaro Fillol Jaime Fillol	4–6, 3–6
Win	7–3	1978	Santiago, Chile	Clay	Hans Gildemeister	Álvaro Fillol Jaime Fillol	6–4, 6–3
Loss	7–4	1979	Monte Carlo, Monaco	Clay	Balázs Taróczy	Ilie Năstase Raúl Ramírez	3–6, 4–6
Loss	7–5	1980	Palermo, Italy	Clay	Balázs Taróczy	Gianni Ocleppo Ricardo Ycaza	2–6, 2–6
Win	8–5	1981	Bournemouth, England	Clay	Ricardo Cano	Buster Mottram Tomáš Šmíd	6–4, 3–6, 6–3
Win	9–5	1983	Florence, Italy	Clay	Francisco González	Dominique Bedel Bernard Fritz	4–6, 6–4, 7–6
Win	10–5	1983	Rome Masters, Italy	Clay	Francisco González	Jan Gunnarsson Mike Leach	6–2, 6–7, 6–4
Win	11–5	1983	Venice, Italy	Clay	Francisco González	Steve Krulevitz Zoltán Kuhárszky	6–1, 6–2
Loss	11–6	1984	Barcelona, Spain	Clay	Martín Jaite	Pavel Složil Tomáš Šmíd	2–6, 0–6
Win	12–6	1985	Washington, D.C., U.S.	Clay	Hans Gildemeister	David Graham Balázs Taróczy	6–3, 1–6, 6–4

• Víctor Pecci at the Association of Tennis Professionals
• Víctor Pecci at the International Tennis Federation
• Víctor Pecci at the Davis Cup