Gilad Menashe Erdan (Hebrew: גלעד מנשה ארדן‎ [ɡilˈ(ʔ)ad (ʔ)eʁˈdan]; born 30 September 1970) is an Israeli politician and diplomat who served as Permanent Representative of Israel to the United Nations from 2020 through 2024.

Erdan previously served as Ambassador of Israel to the United States. He was also a member of the Knesset for Likud from 2003 to 2020, and holder of several ministerial positions, including Minister of Environmental Protection (2009–2013), Communications (2013–2014), Home Front Defense (2013–2014), Interior (2014–2015), Minister of Public Security (2015–2020), Minister of Strategic Affairs and Public Diplomacy (2015–2020) and Minister of Regional Cooperation (2020).

Gilad Menashe Erdan was born in Ashkelon. He is of Romanian Jewish and Hungarian Jewish descent. He studied at Netiv-Meir yeshiva high-school in Jerusalem. He attained the rank of captain during his military service in the Adjutant Corps of the IDF. After his military service, he studied law at Bar-Ilan University, gaining an LL.B., and started working as an attorney. Later on, he gained a master's degree in political science from Tel-Aviv University (cum laude). Erdan is married with four children, and when in Israel, he lives in Kiryat Ono.

Erdan began his political activity in opposition to the Oslo Accords, during his legal studies in the early 1990s. In these circumstances he met with then Likud MK Ariel Sharon, and soon started working as Sharon's political advisor. When Likud won the elections in 1996, Erdan was appointed as an advisor to Prime Minister Benjamin Netanyahu and as director of the Department for Public Inquiries to the Prime Minister's Office between 1996 and 1998. In February 1998, Erdan was elected by a vast majority as the chairman of "Young Likud", and served in this position for 6 years. During his term as Young Likud chairman, Erdan led many of the party's ideological and field activities in opposition to Ehud Barak's 1999-2001 government.

Erdan was first elected to the 16th Knesset in the 2003 elections. During his first term in the Knesset, Erdan was one of the most outspoken opponents of the unilateral Disengagement Plan from the Gaza Strip led by Prime Minister Ariel Sharon from the Likud. In November 2005, Faced with harsh opposition to his plan, Sharon left Likud with several other MKs, and created a new party, Kadima. Erdan remained in Likud and after winning fourth place in the party's primaries, retained his seat in the 17th Knesset in the 2006 elections despite Likud's collapse from 40 to 12 seats in the Knesset. Erdan was re-elected to the 18th Knesset in 2009.

Serving as Member of Knesset, Erdan has supported boosting ties between Israel and Evangelical Christians, as well as presenting bills to enforce no-smoking laws, permanently revoking the driving licenses of serial traffic offenders, and allowing the courts to revoke citizenship for citizens visiting enemy countries or acquiring citizenship from such countries. The latter bill was submitted following Israeli Arab MK Azmi Bishara's visit to Syria, an enemy-state to the state of Israel.

After the 2009 elections to the Knesset, Erdan was appointed Minister of Environmental Protection, and the Minister in charge of coordinating between the Government and the Knesset in the 32nd Government. Upon the government taking office, he expressed support for Avigdor Lieberman's speech opposing the Annapolis Conference and international pressure. He commented that "Israel does not take orders from Obama" and that "citizens of Israel have decided that they will not become the fifty first US state".

As Minister of Environmental Protection, Erdan introduced the most comprehensive River Restoration program to date, legislated and enforced the protection of beaches and the coastline, increased recycling through a bottling and packaging law, and created the Beer Sheva River Park – an ecological park built on a former garbage dump – where thousands of people enjoy bike paths, walking trails, a lake, sports area, and a botanical garden. He initiated a "pollution has no borders" policy which included reducing Israel's Greenhouse Gas Emissions, increasing water desalination, in an effort to make Israel the world leader in water recycling. He also imposed limitations on the import and export of living monkeys for medical purposes, resulting in the closure of the "Mazor Farm", a disputed monkey-breeding farm.