German philosophy, meaning philosophy in the German language or philosophy by German people, in its diversity, is fundamental for both the analytic and continental traditions. It covers figures such as Gottfried Wilhelm Leibniz, Immanuel Kant, Georg Wilhelm Friedrich Hegel, Karl Marx, Friedrich Nietzsche, Martin Heidegger, Ludwig Wittgenstein, the Vienna Circle, and the Frankfurt School, who now count among the most famous and studied philosophers of all time. They are central to major philosophical movements such as rationalism, German idealism, Romanticism, dialectical materialism, existentialism, phenomenology, hermeneutics, logical positivism, and critical theory. The Danish philosopher Søren Kierkegaard is often also included in surveys of German philosophy due to his extensive engagement with German thinkers.

Continental philosophy is a term used to describe some philosophers and philosophical traditions that do not fall under the umbrella of analytic philosophy. However, there is no academic consensus on the definition of continental philosophy. Prior to the twentieth century, the term "continental" was used broadly to refer to philosophy from continental Europe. A different use of the term originated among English-speaking philosophers in the second half of the 20th century, who used it to refer to a range of thinkers and traditions outside the analytic movement. Continental philosophy includes German idealism, phenomenology, existentialism, hermeneutics, structuralism, post-structuralism, deconstruction, French feminism, psychoanalytic theory, and the critical theory of the Frankfurt School as well as branches of Freudian, Hegelian and Western Marxist views. There is widespread influence and debate between the analytic and continental traditions; some philosophers see the differences between the two traditions as being based on institutions, relationships, and ideology rather than anything of significant philosophical substance.