The Irish National Cycling Championships are annual cycling races to decide the Irish cycling champion for several disciplines, across several categories of rider.
The men's road championship is usually held on a Sunday at end of June; the women's race is held the previous day. The winning élite rider wears the national champion's jersey for all road races in the following 12 months. Unlike most countries, the jersey does not contain the national flag or stripes from the flags colours; instead, the jersey has a wide green band superimposed with a shamrock, the national flower of Ireland. The men's under-23 champion is awarded to the first under-23 in the élite race. The junior road races are held on the same day as the élite and the time-trial championship is earlier in the week. The national criteriums are later in the summer.