Érd (Hungarian pronunciation: [ˈeːrd]; German: Hanselbeck, Croatian: Andzabeg, Turkish: Hamzabey) is city and urban county in Pest county, Budapest metropolitan area, Hungary.

The area has been inhabited since ancient times. Archaeological findings indicate that prehistoric men lived here 50,000 years ago.

Érd itself was first mentioned in documents in 1243. The name comes either from the word erdő ("forest") or from ér ("stream").

During the Ottoman occupation of Hungary Érd was captured by the Turks in 1543, after the castle of Székesfehérvár fell. The Turks built a motte castle and a djami (mosque) here. In these times the place was called Hamzsabég (Hamzabey). In 1684 the army led by Charles V, Duke of Lorraine defeated the Turks near Érd.

In 1776 Érd became an oppidum (town). It is possible that it already had been oppidum before the Ottoman occupation. In the early 20th century Érd became the property of the Károlyi family. The town grew, but remained mainly an agricultural town until 1972, when several new facilities were built and the touristic value of Érd grew.

Csaba Vastag (born in Budapest on 11 February 1982) is a Hungarian musician, who won the first ever series of the Hungarian X-Faktor broadcast on the RTL Klub Hungarian television station on 19 December 2010.

Csaba was one of three brothers, the others being Balázs and Tamás. At age 11 he became an acrobatic rock and roll dancer, and later became lead singer of rock band touring several European countries. In 2000 he graduated from Veszprém Secondary School and enrolled in Veszprém's University of Pannonia (Pannon Egyetem university). He also had vocal training under the supervision of Judit Kővári. In 2001 he took part in a Hungarian production of Hair directed by Mészáros Árpád Zsolt. Vastag played the role of Aquarius in the musical theater piece. His first chart break came in 2008 when he reached #4 on the Hungarian Singles Chart.

In 2010, both Csaba Vastag and younger brother Tamás Vastag became Top 12 finalists on the first ever Hungarian X Factor series competition, both reaching Top 5 in week 8, when both became bottom two and Tamás was eliminated. In week 9, Csaba Vastag yet again was voted bottom two but was saved this time as well against opponent Veca Janicsák. But after coming bottom two in two consecutive weeks, he went on to win the contest in the 19 December 2010 final against the other two Top 3 finalists Nikolas Takács (runner-up) and Norbi L. Király (3rd)