Ján Plachetka

{{Short description|Slovak chess player}}

{{Infobox chess player

|image = Plachetka,Jan 2016 Marienbad b.jpeg

|caption =

|country = Czechoslovakia; Slovakia

|birth_date = {{Birth date and age|1945|2|18}}

|birth_place = Trenčín, Slovakia

|death_date =

|death_place =

|title = Grandmaster (1978)

|peakrating = 2480 (January 1980)

|FideID = 14900068

}}

Ján Plachetka (born February 18, 1945) is a chess Grandmaster from Slovakia.

He was awarded the GM title in 1978. He shared the 1st place at Polanica Zdrój 1975, was 1st at Sofia 1979, 1st at Trnava 1979, and shared the 1st place at Strasbourg 1985. He was also a member of the Czechoslovak Chess Olympiad teams from 1980 to 1986.{{cite web|url=http://www.olimpbase.org/players/6komygme.html|title=Men's Chess Olympiads: Ján Plachetka|publisher=OlimpBase|accessdate=20 October 2011}} Despite his age, Plachetka still participates in chess tournaments including playing for the Slovak Senior Team.