| Costa del Sol Occidental | |
| Native Name Lang: | es |
| Settlement Type: | Comarca |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Málaga |
| Seat Type: | Capital |
| Seat: | Marbella |
| Parts Type: | Municipalities |
| Parts Style: | list |
| P1: | Benahavís, Benalmádena, Casares, Estepona, Fuengirola, Manilva, Marbella, Mijas, Torremolinos |
| Area Total Km2: | 802.7 |
| Population Footnotes: | [1] |
| Population Total: | 529496 |
| Population As Of: | 2018 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Area Code Type: | Dialing code |
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:
| Area (km²) | Population 2011[2] | Population 2018[3] | ||
| Manilva | 35.6 | 13,510 | 14,977 | |
| Casares | 162.4 | 5,276 | 6,121 | |
| Estepona | 137.5 | 64,468 | 67,012 | |
| Benahavís | 145.4 | 5,053 | 7,989 | |
| Marbella | 116.8 | 135,124 | 141,463 | |
| Fuengirola | 10.4 | 72,019 | 75,296 | |
| Mijas | 148.8 | 74,028 | 80,630 | |
| Benalmádena | 26.9 | 61,394 | 67,746 | |
| Torremolinos | 19.9 | 66,270 | 68,262 | |
| Totals | 802.7 | 497,142 | 529,496 |