Christian Friis Rottbøll Olufsen (15 April 1802 – 29 May 1855) was a Danish astronomer and professor of astronomy at the University of Copenhagen.
He grew up in Classens Have where his father taught at the agricultural institute.
He received the gold medal in 1824 for his study on eclipse calculations and became an assistant at the observatory.
He spent some time at the Hamburg observatory and in 1831 joined Copenhagen University as an associate professor.
He contributed to studies on the perturbation of the earth, solar tables, errors in measurement,[1] and on the foundations of astronomy as begun by Bessel.