Ken McGrath (born 20 February 1978) is an Irish hurler and hurling selector who played as a centre-back for the Waterford senior team.

[1] Son of former hurler Pat and older brother of former player Eoin, McGrath was a stalwart on the Waterford team for more than a decade.

[9] McGrath first came to prominence on the inter-county scene at the age of seventeen as a member of the Waterford minor hurling team.

Waterford held All-Ireland champions Clare to a draw in the Munster final, however, the Decies lost the replay.

In 2007 McGrath added a National Hurling League medal to his collection when Waterford defeated Kilkenny by 0–20 to 0–18 in the final.

2008 began poorly for Waterford as the team lost their opening game to Clare as well as their manager Justin McCarthy.

In spite of this poor start McGrath's side reached the All-Ireland final for the first time in forty-five years.

A 2–15 apiece draw was the result on that occasion, however, Waterford went on to win the replay after an extra-time goal by Dan Shanahan.

McGrath returned to inter-county hurling for the National League in 2011, however, midway through that competition he retired from the Waterford panel due to injury.