Szekszárd (Hungarian: [ˈsɛksaːrd] ^ⓘ, formerly also Szegzárd; Croatian: Seksar; German: Sechshard or Sechsard; Serbian: Сексард) is a small city in southern Hungary and the capital of Tolna County. By population, Szekszárd is the smallest county capital in Hungary; by area, it is the second-smallest (after Tatabánya).

Szekszárd lies at the meeting point of the Transdanubian Hills and the Great Hungarian Plain, at the mouth of Sió into the flood plain of Danube.

The Etymological Dictionary of Geographical Names, somewhat differently from the above, derives the name of the locality from the old Hungarian colour name szegszár (sötétsárga, brownish yellow), which could have become a personal name with the diminutive -d and thus could have been a predecessor of the town name.

Szekszárd was first mentioned in 1015. The Benedictine monastery of the town was founded by King Béla I in 1061.

During the reign of King Matthias, Szekszárd was the estate of Bishop John, who was involved in a conspiracy against the king. Because of this, King Matthias ordered the castle of Szekszárd to be demolished.

In 1485, Szekszárd was already a significant town, holding five market days a year, but during the Turkish ascendancy of Hungary, the town became deserted and the monastery was destroyed.

By the 18th century, Szekszárd was again a significant town, it became a county seat (of Tolna), and got a coat of arms. The town was destroyed by a fire in 1794, but it could not stop the town's development. Most of the important buildings—including the town hall, the County Hall and several churches—were built during the 19th century. By this time, Szekszárd already had 14,000 residents.

Mihály Babits, an important Hungarian poet was born in Szekszárd in 1883.