Chord line

Chord line may refer to:
 * a straight line connecting the leading and trailing edges of an airfoil
 * Chord (geometry), a line segment joining two points on a curve
 * Chord (astronomy), a line crossing a foreground astronomical object during an occultation which gives an indication of the objects size and/or shape

Chord Line may also refer to a railway line in India and Bangladesh:
 * Chord Line, Tamil Nadu, in Tamil Nadu state
 * Grand Chord, a line in the East Central Railway zone
 * Howrah–Bardhaman chord (Barddhaman Chord Line), a section of the Kolkata Suburban Railway in Calcutta
 * Narayanganj–Laksam chord line, a proposed railway line in Bangladesh