In March 2017, Jeanette Ottesen announced that she would not seek qualification for the Championships, as she would focus on the short course season in the fall, culminating in the European Championships on home soil.[1] Later, Ottesen would go on to announce her pregnancy and a longer hiatus from swimming.[2]
In April, Mie Nielsen withdrew after having met the qualification criteria for the 50 and 100 metres backstroke, citing a lack of motivation and fatigue following the previous summer's Olympics.[3]
Danish swimmers have achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard entry time, and 1 at the B-standard):[4][5][6]