Technological utopianism (often called techno-utopianism or technoutopianism) is any ideology based on the premise that advances in science and technology could and should bring about a utopia, or at least help to fulfill one or another utopian ideal.

A techno-utopia is therefore an ideal society, in which laws, government, and social conditions are solely operating for the benefit and well-being of all its citizens, set in the near- or far-future, as advanced science and technology will allow these ideal living standards to exist; for example, post-scarcity, transformations in human nature, the avoidance or prevention of suffering and even the end of death.

Technological utopianism is often connected with other discourses presenting technologies as agents of social and cultural change, such as technological determinism or media imaginaries.

A tech-utopia does not disregard any problems that technology may cause, but strongly believes that technology allows mankind to make social, economic, political, and cultural advancements. Overall, Technological Utopianism views technology's impacts as extremely positive.

In the late 20th and early 21st centuries, several ideologies and movements, such as the cyberdelic counterculture, the Californian Ideology, cyber-utopianism, transhumanism, and singularitarianism, have emerged promoting a form of techno-utopia as a reachable goal. The movement known as effective accelerationism (e/acc) even advocates for "progress at all costs". Cultural critic Imre Szeman argues technological utopianism is an irrational social narrative because there is no evidence to support it. He concludes that it shows the extent to which modern societies place faith in narratives of progress and technology overcoming things, despite all evidence to the contrary.

Karl Marx believed that science and democracy were the right and left hands of what he called the move from the realm of necessity to the realm of freedom. He argued that advances in science helped delegitimize the rule of kings and the power of the Christian Church.

19th-century liberals, socialists, and republicans often embraced techno-utopianism. Radicals like Joseph Priestley pursued scientific investigation while advocating democracy. Robert Owen, Charles Fourier and Henri de Saint-Simon in the early 19th century inspired communalists^[who?] with their visions of a future scientific and technological evolution of humanity using reason. Radicals seized on Darwinian evolution to validate the idea of social progress. Edward Bellamy's socialist utopia in Looking Backward, which inspired hundreds of socialist clubs in the late 19th century United States and a national political party, was as highly technological as Bellamy's imagination. For Bellamy and the Fabian Socialists, socialism was to be brought about as a painless corollary of industrial development.

Marx and Engels saw more pain and conflict involved, but agreed about the inevitable end. Marxists argued that the advance of technology laid the groundwork not only for the creation of a new society, with different property relations, but also for the emergence of new human beings reconnected to nature and themselves. At the top of the agenda for empowered proletarians was "to increase the total productive forces as rapidly as possible". The 19th and early 20th century Left, from social democrats to communists, were focused on industrialization, economic development and the promotion of reason, science, and the idea of progress.