Nuruddin (Arabic: nūr ad-dīn نور الدين‎) is a male Muslim given name, translating to "light of religion", nūr meaning "light" and dīn meaning "faith, religion". More recently, the name has also been used as a surname.

There are many Romanized spelling variants of the name. The element نور can be spelled Nur, Noor, Nor or Nour. The element دين can be spelled either Din, Deen or Dine. The definite article in front of the "sun letter" d is realized only as a gemination /dː/, the Arabic pronunciation being /nuːrudːiːn/. Syntactically, the name is an iḍāfah (genitive construction), in full vocalization nūru d-dīni. Consequently, depending on the system of Romanization, the definite article can be rendered as al, ad, ud, ed or d.

Among the variant romanized spellings in common use are Nuraddin, Nureddin, Noureddin, Noureddine, Nooradeen, Noordeen, Nourdin, Noordine, Nordine, Nuradin, Nurdin; historically also Nur ad-Din, Nur-ud-Din, Nur al-Din, etc.

Datuk Zulkifli Noordin is a Malaysian politician and is currently the Member of the Parliament of Malaysia for the Kulim–Bandar Baharu constituency in Kedah, Malaysia. He holds his seat as an Independent, having been elected as a member of the People's Justice Party (PKR).

Zulkifli was elected to the Parliament in the 2008 election. His election had been contested by the defeated UMNO candidate; however the court petition to overturn the result was eventually withdrawn.

Zulikifli was born on 19 February 1962 in Baling, Kedah and is a Sharia lawyer.

Zulkifli was a prominent figure in the controversy over the use of the word 'Allah' in a Catholic publication. In response to the decision of the High Court allowing the publication Herald, Zulkifli stated "I can't understand how any Muslim can support this judgment". Zulkifli also called for the resignation of a Pan-Malaysian Islamic Party MP, Khalid Samad for supporting the right of Christians to use the word 'Allah'.

On 6 March 2010, Zulkifli was dismissed from PKR following the unanimous decision of a party disciplinary panel arising from Zulkifli's lodging of a police report against Khalid Samad and his public criticisms of the Chief Minister of Penang, Lim Guan Eng. Zulkifli's request to have his case heard by an all-Muslim disciplinary panel had been dismissed by the party. He immediately indicated he would remain in Parliament as an Independent. He has been vocal in criticizing the federal opposition, especially the PKR, since his dismissal.