1806-20

1806-20 may refer to:


 * a position in the sky, 18:06:0 -20°
 * 1806-20 cluster, the star cluster containing SGR 1806-20
 * LBV 1806-20, a luminous blue variable star
 * SGR 1806-20, a soft gamma repeater pulsar
 * A range of years from 1806 to 1820