Costa del Sol Occidental (English: "Western Coast of the Sun") is a comarca (county) in Andalusia, southern Spain.

It occupies a narrow coastal strip delimited by the cordillera Penibética (Sierra de Mijas, Sierra Alpujata, Sierra Blanca, Sierra Bermeja, Sierra Crestallina) to the north and the Mediterranean Sea to the south. The coast shows a diversity of landscapes: beaches, cliffs, estuaries, bays and dunes. The rivers are short and seasonal, while the agriculture is hampered by the lee effect caused by the Baetic System.

There are 9 municipalities, running along this coast, and listed below from west to east:

Arms	Municipality	Area (km²)	Population (2023)	Density (/km)
	Benahavís	145.4	9,244	63.6
	Benalmádena	26.9	75,801	2,817.88
	Casares	162.4	8,111	49.9
	Estepona	137.5	76,975	559.8
	Fuengirola	10.4	85,598	8,230.6
	Manilva	35.6	17,857	501.6
	Marbella	116.8	156,295	1,338.1
	Mijas	148.8	91,691	616.2
	Torremolinos	19.9	70,434	3,539.4
	Totals	802.7	592,006	737.5

• 
  View of Marbella
• 
  Fuengirola
• 
  Benalmádena
• 
  Mijas
• 
  Casares
• 
  Torremolinos beach

• Baetic System
• Costa del Sol

36°30′54″N 4°52′40″W / 36.51500°N 4.87778°W / 36.51500; -4.87778