Rial, riyal, or RIAL may refer to:

• Rial (surname), a surname (and list of people with the name)
• Royal Institution for the Advancement of Learning, McGill University
• Rial Racing, a former German Formula One team

Various currencies named rial, riyal or riel (derived from Spanish/Portuguese real):

• Iranian rial, the currency of Iran
• Omani rial, the currency of Oman
• Yemeni rial, the currency of Yemen
• Cambodian riel, the currency of Cambodia
• Moroccan rial, a former currency of Morocco
• Tunisian rial, a former currency of Tunisia
• The Hejaz riyal
• The Qatari riyal
• The Saudi riyal
• A popular nickname for the 20-piastre Egyptian coin
• A popular nickname for the 5-santimat Moroccan coin
• Alriyal Alfransi (lit. French Riyal), the Arab name for the Maria Theresa thaler

• Real (disambiguation)
• Riel (disambiguation)
• Royal (disambiguation)