Valentin Niculae Ursache (born 12 August 1985 in Târgu Neamt) is a Romanian former rugby union player.

Ursache played in Romania for Contor Zenner Arad, Steaua Bucharest and CSM Baia Mare.

He also played in France for Pays d'Aix RC and Oyonnax, from where he retired in June 2022.

Ursache has 55 caps for Romania, since his debut at 26 June 2004, in the historical 25-24 win over Italy, in Bucharest, in a test match.

[2] He also played in four group stage matches of Romania's 2015 Rugby World Cup campaign.