Tanja is a feminine given name, primarily used in Slavic countries. It is a variant of Tanya, which itself is a diminutive of Tatiana. The name Tatiana originates from the Roman family name Tatius, which is of uncertain meaning but is often associated with the Sabine king Titus Tatius. Tanja is commonly used in countries such as Serbia, Croatia, Slovenia, and other Slavic-speaking regions. The name carries a sense of elegance and tradition, often associated with strong, independent women.