Samuel Walsh has exhibited his work in many important open selection exhibitions throughout Ireland. He has been a consistent exhibitor at the Royal Hibernian Academy of Arts Exhibition in Dublin since first showing in 1982. He was an invited artist in 2005, 2008 and 2013. He has also shown as an invited artist at the RHA's Banquet Show. His work was selected for the Exhibition of Visual Art (EV+A) in Limerick in the 1980s and 1990s, and for the Irish Exhibition of Living Art, Dublin in the same decades. He has shown his work in Íontas, the small works exhibition in Sligo. the Claremorris Open, SADE, Cork and An Oireachtas, Dublin.

In Ireland, Walsh has been selected for a number of important group exhibitions including: 

1985, 'The Bursary Show', Arts Council touring exhibition.

1987, 'The Silent Image', Boole Library, University College Cork.

1991, 'Irish Art of the Eighties', Modernism and Abstraction, Douglas Hyde Gallery, Dublin.

1992, 'Inside Out', Arts Council touring exhibition.

1996, 'NCAD 250 Drawing 1746-1996', RHA Gallagher Gallery, Dublin.

1997, 'Lingua Oculorum', Belltable Arts Centre, Limerick and tour to Co. Limerick & Cork.

2000, 'the emporer's wardrobe', Original Print Gallery, Dublin and tour to the Butler Gallery, Kilkenny.

2001, 'As I see myself', Hunt Museum, Limerick.

2002, 'Line|Exploration', Lavit Gallery, Cork.

2004, 'In the Time of Shaking', Irish Museum of Modern Art, Dublin.

2005, 'Unseen', South Tipperary County Museum, Clonmel, Co. Tipperary.

2005, 'Drawings & Works on Paper from the IMMA Collection', Irish Museum of Modern Art, Dublin.

2006, 'Tribute to Beckett', Vangard Gallery, Cork.

2007, 'Mike Fitzharris Selects', Lavit Gallery, Cork.

2007, 'Catching a Likeness', National Gallery of Ireland, Dublin.

2010, 'Made in China', Glór, Ennis, Co. Clare.

2011, 'Fine Lines', Limerick City Gallery of Art.

2011, 'Collecting for Ireland', Hunt Museum, Limerick.

2012, 'Rich Terrain', Roscommon Arts Centre.

Walsh has shown his work internationally and in particular in international drawing exhibitions. He has also represented Ireland in exhibitions throughout Europe and the USA:

1984/1986/1988, 'Rajz/Drawing', Pecs, HUNGARY.

1988, 4th International Triennial of Drawing, Wroclaw, POLAND.

1990, 'Images of Ireland', Brussels, BELGIUM.

1991, 'Parable Island', Liverpool, ENGLAND.

1992, 'The Abstract Irish', New York, USA.

1995, 'forme et fonction', swell galerie, Pont-Aven, FRANCE.

1997, 2nd Taunton Open Drawing Exhibition, ENGLAND.

1999, 6th Cheltenham Open Drawing Exhibition, ENGLAND.

2001, 15th International Triennial of Drawing, Rijeka, CROATIA.

2003/2006, 2nd & 3rd International Drawing Competition, Wroclaw, POLAND.

2003, 'Irish Art', Walton Gallery, London, ENGLAND.

2003, '14 Artists 1 Place', Helena, Montana, USA.

2004, IV International Biennial of Drawing, Pilsen, CZECH REPUBLIC.

2005, 'Obsession', Centre International d'art Contemporain, Pont-Aven, FRANCE.

2005, 3rd International Drawing Biennale, Melbourne, AUSTRALIA.

2005, 'D'ici et d'ailleurs', Centre International d'art Contemporain, Pont-Aven, FRANCE.

2006, 'Convergence', Tolbooth Art Centre, Kirkudbright, SCOTLAND.

2007, 'Céad in China', 411 Galleries, Shanghai and tour to Hangzhou & Beijing, CHINA.

2007-2008, 'Made in Ireland', Embassy of Ireland, Beijing, and tour to various venues, CHINA.

2009, 2nd Bangkok Triennale International Print & Drawing Exhibition, Bangkok Art & Culture Center, THAILAND.

2009, 'Drawing Éire', 411 Galleries, Shanghai and tour to Hangzhou & Beijing, CHINA.

2010, 'An Éire of the Senses', Expo Pavilion, Shanghai and tour to various venues in CHINA.

2011, 'Drawing Connections', Siena Art Institute, ITALY.

2012, '6x6', Rochester Contemporary Art Center, New York, USA.