Christian Carlos Miniussi Ventureira (born 5 July 1967) is a former tennis player from Argentina.

Miniussi turned professional in 1984. He started playing tennis at the Adrogué Tennis Club and he also represented his native country as a lucky loser at the 1992 Summer Olympics in Barcelona, where he was defeated in the first round by France's Fabrice Santoro. In the doubles competition Miniussi claimed the bronze medal alongside Javier Frana.

The right-hander won one career title in singles (São Paulo, 1991). He reached his highest singles ATP-ranking on 18 May 1992, when he became the number 57 of the world.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Nov 1991	São Paulo, Brazil	World Series	Hard	Jaime Oncins	2–6, 6–3, 6–4
Loss	1–1	Feb 1992	Maceió, Brazil	World Series	Clay	Tomás Carbonell	6–7(12–14), 7–5, 2–6

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Feb 1985	Buenos Aires, Argentina	Grand Prix	Clay	Martín Jaite	Eduardo Bengoechea Diego Pérez	6–4, 6–3
Loss	1–1	Sep 1987	Barcelona, Spain	Grand Prix	Clay	Javier Frana	Miloslav Mečíř Tomáš Šmíd	1–6, 2–6
Loss	1–2	May 1988	Munich, West Germany	Grand Prix	Clay	Alberto Mancini	Rick Leach Jim Pugh	1–6, 6–3, 3–6
Win	2–2	May 1988	Florence, Italy	Grand Prix	Clay	Javier Frana	Claudio Pistolesi Horst Skoff	7–6, 6–4
Loss	2–3	Jul 1988	Bordeaux, France	Grand Prix	Clay	Diego Nargiso	Joakim Nyström Claudio Panatta	1–6, 4–6
Win	3–3	Aug 1988	St. Vincent, Italy	Grand Prix	Clay	Alberto Mancini	Paolo Canè Balázs Taróczy	6–4, 5–7, 6–3
Loss	3–4	Oct 1988	Palermo, Italy	Grand Prix	Clay	Alberto Mancini	Carlos di Laura Marcelo Filippini	3–6, 5–7
Win	4–4	Sep 1989	Barcelona, Spain	Grand Prix	Clay	Gustavo Luza	Sergio Casal Tomáš Šmíd	7–6, 5–7, 6–3
Loss	4–5	Aug 1991	San Marino, San Marino	World Series	Clay	Diego Pérez	Jordi Arrese Carlos Costa	3–6, 6–3, 3–6
Win	5–5	Jul 1992	Båstad, Sweden	World Series	Clay	Tomás Carbonell	Christian Bergström Magnus Gustafsson	6–4, 7–5

• These records were attained in the Open Era of tennis.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jul 1989	Santos, Brazil	Challenger	Clay	Gabriel Markus	2–6, 2–6
Win	1–1	Feb 1990	Nairobi, Kenya	Challenger	Clay	Pablo Arraya	2–6, 6–3, 6–4
Win	2–1	Feb 1990	Nairobi II, Kenya	Challenger	Clay	Menno Oosting	6–2, 7–6
Loss	2–2	Apr 1990	Estoril, Portugal	Challenger	Clay	Thierry Tulasne	2–6, 2–3 ret.
Loss	2–3	Oct 1993	Curitiba, Brazil	Challenger	Clay	Gilbert Schaller	4–6, 0–6
Loss	2–4	Jul 1994	Poznań, Poland	Challenger	Clay	Horst Skoff	7–6, 3–6, 4–6

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Mar 1989	Casablanca, Morocco	Challenger	Clay	Marcelo Ingaramo	Josef Čihák Mark Koevermans	4–6, 4–6
Win	1–1	Feb 1990	Nairobi, Kenya	Challenger	Clay	Eduardo Masso	João Cunha-Silva Menno Oosting	3–6, 7–5, 7–6
Loss	1–2	Mar 1990	Cairo, Egypt	Challenger	Clay	Eduardo Masso	Tomas Anzari David Rikl	3–6, 7–6, 5–7
Win	2–2	Apr 1990	Oporto, Portugal	Challenger	Clay	Eduardo Bengoechea	José Clavet Francisco Roig	6–0, 6–3
Win	3–2	Aug 1991	Cervia, Italy	Challenger	Clay	Diego Pérez	João Cunha-Silva Daniel Orsanic	6–3, 6–4
Loss	3–3	Aug 1991	Geneva, Switzerland	Challenger	Clay	Roberto Argüello	Vladimir Gabrichidze Martin Strelba	6–1, 3–6, 4–6
Win	4–3	Sep 1991	Merano, Italy	Challenger	Clay	Carlos Costa	Josef Čihák Tomas Anzari	6–3, 6–3
Loss	4–4	Aug 1993	Geneva, Switzerland	Challenger	Clay	Claudio Mezzadri	Jan Apell Nicklas Utgren	4–6, 2–6
Loss	4–5	Feb 1994	Punta del Este, Uruguay	Challenger	Clay	Luis Lobo	Marcelo Filippini Diego Pérez	7–6, 6–7, 6–7
Loss	4–6	Jun 1994	Furth, Germany	Challenger	Clay	Gastón Etlis	Vojtěch Flégl Andrew Florent	6–7, 1–6
Win	5–6	Mar 1995	Punta del Este, Uruguay	Challenger	Clay	Diego Pérez	Lucas Arnold Ker Patricio Arnold	4–6, 7–5, 6–1

• Christian Miniussi at the Association of Tennis Professionals
• Christian Miniussi at the International Tennis Federation
• Christian Miniussi at the Davis Cup
• Christian Miniussi at Olympics at Sports-Reference.com (archived)