NEC Green Rockets Tokatsu (formerly NEC Green Rockets) is a Japanese rugby union team in the Japan Rugby League One. The team's captain is Ryota Asano. The previous captain was Takuro Miuchi, who was also the captain of the Japan national rugby union team. Before the semi-professional Top League was created, the team was just known as "NEC". The amateur club was founded in 1985 in the Kantō region.
NEC Green Rockets won the All-Japan Championship final for the second time on 27 February 2005, beating Toyota Verblitz 17-13. They drew 6-6 with Toshiba Brave Lupus in the 43rd Japan Championship final on 26 February 2006 after an effective defensive effort and the sin-binning of Glen Marsh in the last ten minutes of the game.
The team rebranded as Green Rockets Tokatsu ahead of the rebranding of the Top League to the Japan Rugby League One in 2022.