1E

1E or 1-E may refer to:

1st meridian east, a longitude coordinate
ISS 1E
Astra 1E, a communications satellite owned and operated by SES, and launched in 1995
California Proposition 1E (2009), a defeated California ballot proposition
1E, UIC classification of the 2-10-0 train arrangement
1E, a designator of celestial objects discovered via Einstein Observatory
1E, inc - Software Company specializing in Digital Employee Experience (DEX) Gartner

See also