Kieran Brennan (born 20 June 1957) is an Irish Army major general and former hurler who played as a centre-forward at senior level for the Kilkenny county team.

[1] Born in Jenkinstown, County Kilkenny, Brennan first played competitive hurling during his schooling at St Kieran's College.

[3] During his schooling at St Kieran's College in Kilkenny, Brennan established himself as a key member of the senior hurling team.

An 8–19 to 3–5 trouncing of Dublin secured a fourth successive provincial title for the team and a first Leinster MHC medal for Brennan.

The Kilkenny minors retained their provincial dominance in 1975 with Brennan collecting a second successive Leinster medal following a 2–18 to 3–4 defeat of Dublin once again.

Having been beaten the previous year, the Cats made no mistake on this occasion and secured a narrow 2–9 to 1–9 victory giving Brennan an All-Ireland Under-21 Hurling Championship medal.

After a fallow two-year period, Kilkenny bounced back in 1982 with Brennan winning his first National Hurling League medal following a 2–14 to 1–11 defeat of Wexford.

The Cats were rank outsiders on the day; however, a brilliant save by Noel Skehan was followed by two quick goals by Christy Heffernan just before the interval.

Billy Fitzpatrick was the star with ten points, giving Kilkenny a 2–14 to 1–9 lead with seventeen minutes left; however, they failed to score for the remainder of the game.

[8] After completing his secondary education at St Kieran's College, Brennan joined the Irish Army and was commissioned as an officer in the Infantry Corps in 1977.

[9] In June 2015, it was announced that Brennan would take over as Deputy Chief of Staff Operations (D COS Ops) at Defence Forces Headquarters (DFHQ).

[1] Brennan is a graduate of the Irish Defence Forces Military College, where he completed both the Junior and Senior Command and Staff Courses.

The son of Kieran Brennan (1926–1985) and Margaret "Peggy" Dalton (1931–2009), he has four brothers – Nickey, Gearóid, Canice and Paudie – and four sisters – Kathleen, Bernadette, Bridget and Marion.