3/2

3/2 may refer to:
 * March 2 (month-day date notation)
 * 3 February (day-month date notation)
 * The fraction one and one half ($3/2$ = $1 1/2$), or in decimal form 1.5
 * Perfect fifth
 * 3rd Battalion, 2nd Marines
 * A triple metre time signature
 * A common aspect ratio (image)
 * Hemiola