Listmania!
Random recommendations in random order
The Oxford Classical DictionaryThe Oxford Classical Dictionary
Buy used from: £40.00
As if you didn't already have it...
The Annals of Imperial Rome (Classics)The Annals of Imperial Rome (Classics) by Tacitus
Buy new: £7.36 / Used from: £1.51
There aren't enough Classicists in the world
Memoirs of Hadrian: And Reflections on the Composition of Memoirs of Hadrian (Penguin Modern Classics)Memoirs of Hadrian: And Reflections on the Composition of Memoirs of Hadrian (Penguin Modern Classics) by Marguerite Yourcenar
Buy new: £6.47 / Used from: £1.29
Death of an InquisitorDeath of an Inquisitor by Leonardo Sciascia
Buy used from: £443.59
The Drowned and the Saved (Abacus Books)The Drowned and the Saved (Abacus Books) by Primo Levi
Buy new: £5.86 / Used from: £0.01
Later Short Stories (Modern Library)Later Short Stories (Modern Library) by A.P. Chekhov
Buy used from: £48.49
Bend Sinister (Penguin Modern Classics)Bend Sinister (Penguin Modern Classics) by Vladimir Nabokov
Buy new: £7.76 / Used from: £4.50
I included this as one of my particular favourites among Nabokov's works; consider it a recommendation of all his novels
L' Etranger (Folio)L' Etranger (Folio) by Albert Camus
Buy new: £6.55 / Used from: £0.29
Follow with La Peste and then La Chute. Le Premier Homme is interesting but incomplete. Various essays are also worth reading, such as Le Mythe de Sisyphe
The Complete Essays (Penguin Classics)The Complete Essays (Penguin Classics) by Michel de Montaigne
Buy new: £12.50 / Used from: £9.81
The Leopard (Everyman's Library classics)The Leopard (Everyman's Library classics) by Giuseppe Tomasi di Lampedusa
Buy new: £9.08 / Used from: £4.74
The Best of Myles: A Selection from 'Cruiskeen Lawn'The Best of Myles: A Selection from 'Cruiskeen Lawn' by Flann O'Brien
Buy used from: £0.01
For lovers of cynicism and languages - some of the pieces are in Latin, German or Irish. The Buchhandlung piece alone is reason to buy this book. Also get The Third Policeman and At Swim Two Birds.
The Normans in Sicily: The Normans in the South, 1016-1130 and the Kingdom in the Sun, 1130-1194The Normans in Sicily: The Normans in the South, 1016-1130 and the Kingdom in the Sun, 1130-1194 by John Julius Norwich
I would also recommend the Byzantine trilogy and his History of Venice
The Complete Short Stories (Vintage classics)The Complete Short Stories (Vintage classics) by Franz Kafka
Buy new: £6.97 / Used from: £4.00
EmbersEmbers by Sandor Marai
Buy used from: £0.01
Greek MythsGreek Myths by Robert Graves
Buy new: £9.71 / Used from: £2.32
Goodbye to All That (Essential Penguin)Goodbye to All That (Essential Penguin) by Robert Graves
Buy new: £6.49 / Used from: £2.34
The Prince (Penguin Classics)The Prince (Penguin Classics) by Niccolo Machiavelli
Buy used from: £0.01
Rembrandt by HimselfRembrandt by Himself
Buy used from: £30.00
The Divine Comedy: Inferno v. 1 (Classics)The Divine Comedy: Inferno v. 1 (Classics) by Dante
Buy used from: £0.01
Musa's is a good prose translation of all 3 books.
Christ Stopped at Eboli (Penguin Modern Classics)Christ Stopped at Eboli (Penguin Modern Classics) by Carlo Levi
Buy new: £6.43 / Used from: £0.95
Der ZauberbergDer Zauberberg by Thomas Mann
Buy used from: £11.97
The Histories (Penguin Classics)The Histories (Penguin Classics) by Herodotus
Buy used from: £2.71
Pompeii: Public and Private Life (Revealing Antiquity)Pompeii: Public and Private Life (Revealing Antiquity) by P Zanker
Buy new: £18.05 / Used from: £10.50
Houses and Society in Pompeii and HerculaneumHouses and Society in Pompeii and Herculaneum by Andrew Wallace-Hadrill
Buy new: £19.27 / Used from: £16.18