2018 Hungarian Swimming Championships

The 2018 Hungarian Swimming Championships were the 120th edition of the Hungarian Swimming National Championships (CXX. Országos Bajnokság Széchy Tamás emlékére), which took place on 28–31 March 2018 at the Debrecen Swimming Pool Complex in Debrecen.

Events
Similar to the program's format, swimming features a total of 42 events (20 each for men and women), including two 2 mixed events. The following events will be contested (all pool events are long course, and distances are in metres unless stated):
 * Freestyle: 50, 100, 200, 400, 800 (women), and 1,500 (men);
 * Backstroke: 50, 100 and 200;
 * Breaststroke: 50, 100 and 200;
 * Butterfly: 50, 100 and 200;
 * Individual medley: 200 and 400;
 * Relays: 4×100 free, 4×200 free; 4×100 medley
 * Mixed: 4×100 free; 4×100 medley