This is a list of spider species that occur on Socotra. Unless otherwise noted, they are endemic (they occur only there).

Agelenidae

• Agelenella pusilla (Pocock, 1903)

Araneidae

• Araneus cardioceros Pocock, 1899
• Gasteracantha sanguinolenta C. L. Koch, 1844 — also in Africa and São Tomé
• Nephila sumptuosa Gerstäcker, 1873 — also in East Africa

Oxyopidae

• Oxyopes rutilus Simon, 1890 — also in Yemen
• Peucetia viridis Blackwall, 1858, 1844 — also in Yemen

Barychelidae

• Atrophothele socotrana Pocock, 1903

Cheiracanthiidae

• Cheiracanthium socotrense Pocock, 1903

Gnaphosidae

• Zimiris diffusa Platnick & Penney, 2004 — also in St. Helena and India

Hersiliidae

• Hersilia wraniki Rheims, Brescovit & van Harten, 2004 — also in Yemen

Migidae

• Moggridgea socotra Griswold, 1987

Oonopidae

• Gamasomorpha deksam Saaristo & van Harten, 2002
• Orchestina bedu Saaristo & van Harten, 2002
• Orchestina foa Saaristo & van Harten, 2002
• Silhouettella usgutra Saaristo & van Harten, 2002
• Socotroonops socotra Saaristo & van Harten, 2002

Oxyopidae

• Oxyopes rutilius Simon, 1890 — also in Yemen

Palpimanidae

• Scelidomachus socotranus Pocock, 1899

Philodromidae

• Thanatus forbesi Pocock, 1903

Pholcidae

• Leptopholcus dioscoridis Deeleman-Reinhold & van Harten, 2001

Salticidae

• Afrobeata firma Wesołowska & van Harten, 1994
• Bianor biguttatus Wesołowska & van Harten, 2002
• Habrocestum albopunctatum Wesołowska & van Harten, 2002
• Habrocestum dubium Wesołowska & van Harten, 2002
• Habrocestum ferrugineum Wesołowska & van Harten, 2002
• Habrocestum inquinatum Wesołowska & van Harten, 2002
• Habrocestum socotrense Wesołowska & van Harten, 2002
• Habrocestum speciosum Wesołowska & van Harten, 1994
• Hasarius insularis Wesołowska & van Harten, 2002
• Heliophanillus suedicola (Simon, 1901) — also in Yemen
• Heliophanus parvus Wesołowska & van Harten, 1994
• Pellenes striolatus Wesołowska & van Harten, 2002
• Pseudicius mirus Wesołowska & van Harten, 2002
• Rafalus insignipalpis Simon, 1882 — also in Yemen
• Thyene similis Wesołowska & van Harten, 2002

Sparassidae

• Olios socotranus (Pocock, 1903)

Tetragnathidae

• Tetragnatha granti Pocock, 1903

Theraphosidae

• Monocentropus balfouri Pocock, 1897

Theridiidae

• Latrodectus hystrix Simon, 1890 — also in Yemen

Thomisidae

• Bassaniodes socotrensis Pocock, 1903
• Dimizonops insularis Pocock, 1903

Zodariidae

• Cydrela insularis (Pocock, 1899)