好望角省 （英语：Cape of Good Hope Province；南非语：Die Provinsie Kaap die Goeie Hoop），通称开普省 （英语：Cape Province；南非语：Kaapprovinsie）前身是开普殖民地，是南非联邦和南非共和国的四个省之一。首府开普敦。

1994年起被分拆为北开普省、西开普省和东开普省。小部分土地被划入西北省。

The Province of the Cape of Good Hope (Afrikaans:Provinsie van die Kaap die Goeie Hoop), commonly referred to as the Cape Province (Afrikaans:Kaapprovinsie) was a province in the Union of South Africa and subsequently the Republic of South Africa.

It encompassed the old Cape Colony, and had Cape Town as its capital.