| Nicolai Hartling | |
| Birth Date: | 1994 1, df=yes |
| Country: | Denmark |
Johan Nicolai Trock Hartling (born 17 January 1994 in Hørsholm) is a Danish hurdler.
He established several national records on 400 m hurdles, the last one of 50.01, finishing third at 2019 European Team Championships.[1]