Aro may refer to:
The Aromanians (Aromanian: Armâńi, Rrămăńi) are an ethnic group native to the southern Balkans, traditionally living in northern and central Greece, central and southern Albania, the Republic of Macedonia, and south-western Bulgaria.
In organic chemistry, the term aromaticity is used to describe a cyclic (ring-shaped), planar (flat) molecule with a ring of resonance bonds that exhibits more stability than other geometric or connective arrangements with the same set of atoms.
Aromanian (limba armãneascã, armãneshce, armãneashti, rrãmãneshti), also known as Macedo-Romanian or Vlach, is an Eastern Romance language spoken in Southeastern Europe.
Around the World in 80 Days (sometimes spelled as Around the World in Eighty Days) is a 1956 American epic adventure-comedy film starring David Niven and Cantinflas, produced by the Michael Todd Company and released by United Artists.
Around the Horn (ATH) is an American sports roundtable discussion show conducted in the style of a panel game that is produced by ESPN.
Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception.
Aroostook County (/əˈrus.tək/ ə-ROOS-tək) is a county located in the U.S. state of Maine along the Canada–US border.