Neocolonialism is the continuation or reimposition of imperialist rule by a state over another nominally independent state. This is the continuation of colonial representations and realities which remain after formal colonisation has come to an end. Neocolonialism is the control of less-developed countries by developed countries through indirect means. The term neocolonialism was first used after World War II to refer to the continuing dependence of former colonies on foreign countries, but its meaning soon broadened to apply, more generally, to places where the power of developed countries was used to produce a colonial-like exploitation.Neocolonialism takes the form of economic imperialism, globalization, cultural imperialism and conditional aid to influence or control a developing country instead of the previous colonial methods of direct military control or indirect political control (hegemony).

The theory of imperialism refers to a range of theoretical approaches to understanding the expansion of capitalism into new areas, the unequal development of different countries, and economic systems that may lead to the dominance of some countries over others. These theories are considered distinct from other uses of the word imperialism which refer to the general tendency for empires throughout history to seek power and territorial expansion. The theory of imperialism is often associated with Marxist economics, but many theories were developed by non-Marxists. Most theories of imperialism, with the notable exception of ultra-imperialism, hold that imperialist exploitation leads to warfare, colonization, and international inequality.