The 1978 ABN World Tennis Tournament was a men's tennis tournament played on indoor carpet courts at Rotterdam Ahoy in the Netherlands. It was a World Championship Tennis (WCT) event that was part of the 1978 Colgate-Palmolive Grand Prix circuit. It was the sixth edition of the tournament and was held from 3 April through 9 April 1978. First-seeded Jimmy Connors won the singles title.[1]
See main article: 1978 ABN World Tennis Tournament – Singles. 
Jimmy Connors defeated 
Raúl Ramírez 7–5, 7–5
Fred McNair / Raúl Ramírez defeated Robert Lutz / Stan Smith 6–2, 6–3