The 1978 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the National Tennis Centre in Toronto in Canada that was part of the 1978 Colgate-Palmolive Grand Prix and of the 1978 WTA Tour. The tournament was held from August 14 through August 20, 1978.
Eddie Dibbs defeated José Luis Clerc 5âÂÂ7, 6âÂÂ4, 6âÂÂ1
Regina Marà ¡ÃÂková defeated Virginia Ruzici 7âÂÂ5, 6âÂÂ7<sup>(9âÂÂ11)</sup>, 6âÂÂ2
Wojciech Fibak / Tom Okker defeated Colin Dowdeswell / Heinz Günthardt 6âÂÂ3, 7âÂÂ6
Regina Marà ¡ÃÂková / Pam Teeguarden defeated Chris O'Neil / Paula Smith 7âÂÂ5, 6âÂÂ7, 6âÂÂ2