• Songs of Oriel (Dublin: Maunsel 1908).
• Verses in Peace and War (London: Burns & Oates 1922).
• ed., An Anthology of Catholic Poetry (London: Burns & Oates 1925/rev. ed. 1952).
• The Poems of Shane Leslie (London: Cayme 1928), 96pp..
• Poems and Ballads (London: Ernest Benn 1933) (xii), 135pp.
• Lines Written in the Month’s Mind of Mona Dunn. Dec. 19 1928-Jan 19 1929 [London: C. H. St. J. Hornby, Ashendene Press 1929].
• Jutland: A Fragment of Epic (London: Ernest Benn).
• The Hyde Park Pageant ([London:] Fortune 1930), pamph..
• Poems from the North (Dublin 1945), pamphl.

• The Oppidan (London: Chatto & Windus 1922), xx, 365pp..
• Doomsland (London: Chatto & Windus 1923).
• The Cantab (2nd edn., rev., London: Chatto & Windus 1926; 1929); The Anglo-Catholic (London: Chatto & Windus 1929).

• The Story of St Patrick’s Purgatory (St Louis MO/London: B. Herder 1917) [eight tales].
• Masquerades, Studies in the Morbid (London: John Long 1924).
• A Ghost in the Isle of Wight (London: E Matthews & Marot 1929).
• Fifteen Odd Stories (London: Hutchinson [1935]).
• Shane Leslie’s Ghost Book (London: Hollis & Carter 1955).

• The End of a Chapter (London: Constable 1916; rev. edn. London: Constable 1917; rev. & rewritten London: Heinemann 1929).
• The Passing Chapter (London: Cassell 1934).
• The Film of Memory (London: Michael Joseph 1938).
• Long Shadows (London: John Murray 1966).

• The Landlords of Ireland at the Cross-Roads: A Letter [ ... &c.] (Dublin: James Duffy & Co. 1908), 8pp. [BML].
• Isle of Columcille (CTS 1909).
• Lough Derg in Ulster (Dublin: Maunsel 1909).
• A Sketch of the Oxford Movement (CTS 1909).
• The Irish Issue in its American Aspect (NY: Scribner’s 1917; London: T. Fisher Unwin 1918).
• Henry Edward Manning: His Life and Labours (London: Burnes & Oates 1921).
• Commemoration of Arthur Griffith and Michael Collins (1922).
• Sir Mark Sykes, His Life and Letters (London: Cassell 1923).
• George the Fourth (London: Ernest Benn 1925) [DIL 1926].
• The Delightful, the Diverting, and the Devotional Plays of Mrs. Fitzherbert (London: Ernest Benn 1928).
• The Skull of Swift: An Extempore Exhumation (London: Chatto & Windus; Indianapolis: Mobbs-Merrill 1928), 347pp..
• Memoirs of John Edward Courtenay Bodley (London & Toronto: Jonathan Cape 1930).
• Preface to Rose Shaw, Carleton’s Country (Dublin: Talbot Press 1930) [see infra].
• ed., St. Patrick’s Purgatory: A Record from History and Literature (London: Burnes & Oates, 1932), xlvii, 216pp., frontis., ills. and folding map. [extract].
• Studies in Sublime Failure (London: Ernest Benn 1933); The Oxford Movement 1833-1933 (London: Burns & Oates 1933).
• The Script of Jonathan Swift and Other Essays (Phil: Pennsylvania UP 1935).
• American Wonderland : Memories of Four Tours in the United States of America (1911-1935) (London: Michael Joseph 1938).
• Men Were Different [...] Five Studies in Victorian Biography (London: Michael Joseph 1937) [contents].
• Sir Evelyn Ruggles-Brise (London: John Murray 1928).
• Mrs Fitzherbert (London: Burns & Oates 1939).
• The Irish Tangle for English Readers (London: MacDonald n.d. [1946]) [extract].
• Salutation to Five (London: Holler & Carter 1951).
• Cardinal Gasquet, a Memoir (London: Burns & Oates 1953).
• ed., Edward Tennyson Reed, 1860-1933 (London: Heinemann 1957), biog.

• [as ‘Dominis Canis’,] review of James Joyces Ulysses, in Dublin Review (Sept. 1922), pp.112-19; rep. in Robert Deming, ed., James Joyce: The Critical Heritage, London: Routledge & Kegan Paul 1970 [Vol. 1], pp.200-03 [infra].
• Shane Leslie, ‘Ulysses’, in Quarterly Review, 238 (Oct. 1922) [copy held in Lockwood Library of Buffalo Univ., NY].

‘Since a leading French critic [Valéry Larbaud] has announced that with Mr. James Joyce’s Ulysses “Ireland makes a sensational re-entrance into high European literature” [...] and since the entire setting of this book Catholic Dublin, and since the seven hundred pages contain a fearful [200] travesty on persons, happenings and intimate life of the most morbid and sickening description, we say not only for the Dublin Review but for Dublin écrasez l’infâme!
 The Irish literary movement may have arisen in the bogs of Aran and Mayo, but it is not going to find its stifling climax in a French sink. The vain folk who speak of this book as the greatest English writing since Shakespeare may take what attitude they like concerning English literature, but as for Ulysses being a great creation of the Irish Celt, a Cuchulain of the sewer even, or an Ossian of obscenity, it may safely be repudiated, before reading, by the Irish people, who certainly do not get either the rulers or writers they deserve. The bulk of this enormous book is quite unquotable and we hope that, as the edition is limited and the price is rapidly ascending in the “curious” market, it will remain out of the reach of the bulk of the author’s fellow-countrymen. We are prepared to do justice to the power and litheness of the style, when intelligible, to the occasional beauty of a paragraph and to the adventurous headlong experiments in new literary form, but as a whole we regard it as the screed of one possessed; a commoner complaint than is generally realised in these days, but one seldom taking a literary channel of expression.
[...]
 Mr. Joyce has rather added than otherwise to the sorrows of Satan. [...] In this work the spiritually offensive and the physically unclean are united. We speak advisedly when we say that though no formal condemnation has been pronounced, the Inquisition can only require its destruction or, at least, its removal from Catholic houses. Without grave reason or indeed the knowledge of the Ordinary no Catholic publicist can even afford to be possessed of a copy of this book, for in its reading lies not only the description but the commission of sin against the Holy Ghost. Having tasted and rejected the devilish drench, we most earnestly hope that this book be not only placed on the Index Expurgatorius, but that its reading and communication be made a reserved case.
[...]
 As for the vaunted new experimentation in literary forms, we doubt if the present generation is likely to adopt them by writing, for instance, forty-two pages without a capital or a stop, or by abandoning all reasoned sequence of thought and throwing the flash and flow of every discordant, flippant, allusive or crazy suggestiveness upon paper without grammar and generally without sense. Of course. when the allusion can be caught, and the language is restrained, the effect can be striking and even beautiful, but how few of such passages can be meshed in the dreary muck-ridden tide. We will give the devil his due and appreciate the idyll of Father Conmee, S.J., who with most people mentioned in the course of the book, is really a Dubliner. Many pages are saturated with Catholic lore and citation, which must tend to make the book more or less unintelligible to critics, who are neither of Catholic or Dublin origin. Nothing could be more ridiculous than the youthful dilettantes in Paris or London who profess knowledge and understanding of a work which is often mercifully obscure even to the Dublin-bred.
[...]
  Reading a textbook and boiling it down into lists is no new device and depends for its success on the eliminating touch with which Mr. Joyce is most inartistically unendowed. In fact, the reader in struggling from oasis to oasis will find himself caught in a Sahara that is as dry as it is stinking. It is only when he varies his cataloguing with rare or new words that he is endurable, as of the Dublin vegetable market [...]’

Leslie concludes by expressing his trust that for the general reader the danger of being corrupted by ‘so much rotten caviare’ as may be found in ‘this abomination of desolation’ and portrays the author as a ‘frustrated Titan as he revolves and splutters hopelessly under the flood of his own vomit.’ (pp.112-19.)

‘The racial content of the modern Irishman is very mixed. It is the environment, the politics, the religion, the climate, which makes him an Irishman and keeps him so. His blood comes from anywhere. The only pure blood in Ireland is the bloodstock in the racing stables.’ (p.31.)

‘No community are in an easier or more favourable position than the Church of Ireland in the Free State. Far from persecuting them, the Dublin Government goes out of its way to meet all their demands in education: and to maintain schools where numbers are insufficient.’ (p.23.)

‘Can England and Ireland be fair to each other if the ledger of this War can ever be accounted by fair and honest historians? In the aftermath of war their need for each other will be long and frequent.

That entertaining character in Irish folklore, “the Speckled Gilly”, always made but one condition of service: “Nothing unfair to be done to me!” No better working motto could be found to inspire Anglo-Irish relations to-day.

As an outsider, with a foot once in both camps, as a historian living on the Ulster borders, I can only smooth that way with the pen - to enable the Irish and English really to enjoy that perpetual understanding which is the peace of good neighbours.

There is only one way and that is for England to let the past glide like an immense iceberg into the Atlantic instead of remaining to chill the multiple hearts of two peoples.

An Irish Republic, more or less cannot harm England even strategically now. Recognised in that phrase and within the association which makes all the Commonwealths sisters and which only calls for the Royal signature to implement diplomatic appointments let Ireland be considered a Republic!

Should Dublin wish to make the experiment and undo even that association-assuming an international neutrality and a Sovereign power say equal to that of Switzerland - the experiment will not harm England and it will add to Irish wisdom and statecraft.

If an Irish Republic existed only onc session - that Session would be entirely employed in renewing the associations with the British Commonwealths and making a permanent entente with England. No doubt it would be a token Republic: but the dream of the United Irishmen and the men of ’48, who devised the Irish Tricolour and of the men of 1916 who raised it, would be fulfilled - and Ireland is a land of dreams.

Let who will make the laws, but let the poets write the ballads, it was said of old. But now let who will guide Irish destinies, as long as the dreamers fulfill their dreams!’ (p.227).