Denmark participated in the 2010 Summer Youth Olympics in Singapore.

Thirty Danish athletes competed in eleven sports: archery, athletics, badminton, canoeing, cycling, fencing, handball, judo, rowing, sailing and tennis.

Note: In sprint repechages, the fastest 6 boats out of 10 qualified.

In slalom repechages, the fastest 3 out of 10 boats qualified.

*Denmark awarded −5 points for finishing with all three riders