Ardgowan House, Castle & Gardens is a Privately owned late 18th-century mansion on the Firth of Clyde near Inverkip, Scotland. Ardgowan is located in Inverclyde, in the former county of Renfrewshire. The Ardgowan Estate has been held by the Stewart family since the early 15th century: towards the end of that century, their tower house Ardgowan Castle was built within the site of the previous Inverkip Castle fortress. The present house was erected in 1797 and completed in 1801 from designs by Cairncross. It is the seat of the Shaw Stewart baronets, currently Sir Ludovic Houston Shaw Stewart, 12th Baronet of Greenock and Blackhall.

Inverkip is a village and parish in the Inverclyde council area and historic county of Renfrewshire in the west central Lowlands of Scotland, 5 miles (8 km) southwest of Greenock and 8.1 miles (13 km) north of Largs on the A78 trunk road. The village takes its name from the River Kip and is served by Inverkip railway station.