| Headercolor: | lightblue |
| Ruslans Nakoņečnijs | |
| Birth Date: | 21 April 1989 |
| Birth Place: | Mariupol, Ukrainian SSR |
| Country: | Ukraine (until 2014) Latvia (2015–present) |
| Sport: | Modern pentathlon |
Ruslans Nakoņečnijs or Ruslan Nakonechnyi (born 21 April 1989) is a Ukrainian-Latvian modern pentathlete. He competed at the 2016 Summer Olympics in Rio de Janeiro, in the men's event.[1]
Born in Ukraine, he was a member of the country's national pentathlon team up to mid-2014, when due to the war in Donbas he fled his native Donetsk Oblast. He began working and training in Latvia and started to compete under the Latvian flag since January 2015. In October, Nakonečnijs received Latvian citizenship for special merit after a vote in the Saeima. On his first race he won the Egyptian stage of the UIPM Pentathlon World Cup.[2]