Illegal settlements may refer to:

Settler colonialism, illegal under international law Ba'athist Arabization campaigns in northern Iraq Indonesian transmigration program Israeli settlement Moroccan settlements Pashtun colonization of northern Afghanistan Turkish settlers in Northern Cyprus Western European colonialism and colonization European colonization of the Americas European colonization of India

Squatting Illegal construction

Illegal agreements or illegal arrangements of the following: Settlement (closing), the final step in executing a real estate transaction Settlement (finance), where securities are delivered against payment of money Settlement (litigation), a resolution between disputing parties about a legal case Settlement (trust), a deed whereby property is given by a settlor into trust Structured settlement, a negotiated financial or insurance arrangement