Sine, in mathematics, is a trigonometric function of an angle. The sine of an angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (i.e., the hypotenuse).

Maurice Sinet (born 31 December 1928), known as Siné, is a French political cartoonist. His work is noted for its anti-colonialism, anti-capitalism, anti-clericalism, and anarchism.

Sinë , is a small village in the Dibër County, in Albania. At the 2015 local government reform it became part of the municipality Dibër.