| Nicholas Kalogeropoulos | |
| Residence: | San Jose, Costa Rica |
| Birth Date: | 1945 2, df=yes |
| Birth Place: | Costa Rica |
| Turnedpro: | 1968 (amateur from 1960) |
| Retired: | 1978[1] |
| Plays: | Right-handed |
| Singlesrecord: | 52-70 |
| Singlestitles: | 0 |
| Highestsinglesranking: | No. 108 (26 September 1973) |
| Frenchopenresult: | 3R (1965, 1967) |
| Wimbledonresult: | 4R (1964) |
| Doublesrecord: | 34-48 |
| Doublestitles: | 0 |
| Frenchopendoublesresult: | 3R (1969, 1970) |
| Wimbledondoublesresult: | 2R (1970, 1972) |
| Medaltemplates-Expand: | yes |
Nicholas Kalogeropoulos (Greek: Νικόλαος Καλογερόπουλος; born 18 February 1945), also known as Nicky Kalo,[1] is a retired Greek tennis player who won a bronze medal at the 1971 Mediterranean Games. In doubles, he finished runner-up at the 1968 Italian Open. He was ranked as best Greek player in 1962–74 and was a member of the Greek Davis Cup team in 1963–81.[2]
Kalogeropoulos was born in Costa Rica to Greek parents, where he started training in tennis and spent many years of his life. In 1962, he won the junior Wimbledon and French Championships.[3] In 1966, he married fellow tennis player Carol-Ann Prosen. He retired in 1978.[1]
| Result | W/L | Date | Tournament | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | May 1968 | Rome, Italy | Clay |  Allan Stone | Tom Okker  Marty Riessen | 3–6, 4–6, 2–6 | |
| Loss | 0–2 | Jun 1972 | Eastbourne, England | Grass | Andrew Pattison |  Juan Gisbert Sr. Manuel Orantes | 6–8, 3–6 | |
| Loss | 0–3 | Feb 1974 | Birmingham, US | Hard |  Iván Molina | Ian Fletcher Sandy Mayer | 6–4, 6–7, 1–6 |