Alex Nicki Rasmussen (born 9 June 1984) is a Danish professional racing cyclist. Rasmussen is a track cycling specialist, and was the 2005 Scratch World Champion. Together with Michael Mørkøv, Rasmussen won the Danish Madison Championships six times in a row, and as such, are nicknamed the 'Par nummer syv' (Pair number seven). Rasmussen has also found success on the road, winning the 2007 Danish National Road Race Championships. Rasmussen previously competed for UCI ProTeams Team Saxo Bank (2009–2010), HTC-Highroad (2011), and Garmin-Barracuda (2012). On 19 March 2013, Garmin-Sharp re-signed Rasmussen for the remainder of the 2013 season. Rasmussen left Garmin-Sharp following the 2013 season, and subsequently announced plans to re-enter track cycling. Rasmussen joined Riwal Cycling Team for the 2014 season.
On 15 September 2011, his contract with HTC-Highroad was terminated for missing a doping control, at which time the team was made aware of two previous controls he had missed before he joined them. Rasmussen was also removed from the Danish UCI Championships team, and faced criminal prosecution. However, on 17 November, Rasmussen was cleared of the charges due to a procedural error on the part of the UCI. His previously signed contract with Garmin-Barracuda for the 2012 season, nullified upon news of the whereabouts violations, was again honored. The UCI appealed this decision to the Court of Arbitration for Sport in December 2011, with the original decision being overturned on 4 July 2012. As a result, Rasmussen was given a backdated 18-month ban, meaning that he would be suspended until April 2013. His contract with the renamed Garmin-Sharp squad was also terminated.