What do you call these things in your language?

[Beit El]

Lord of the rings - In de Ban van de Ring

The Picture of Dorian Gray - Het portret van Dorian Gray

The Ingenious Gentleman Don Quixote of La Mancha - De vernuftige edelman Don Quichot van La Mancha

Gulliver's Travels - Gullivers reizen

Dangerous Liaisons - Les Liaisons dangereuses

The Count of Monte Christo - De graaf van Monte-Cristo

Odyssey - Odyssee

Iliad - Ilias

In Search of Lost Time - Op zoek naar verloren tijd

Journey to the End of the Night - Reis naar het einde van de nacht

The Prime of Miss Jean Brodie - Juffrouw Brodies beste jaren

The Seasons - ?

The Great Gatsby - De grote Gatsby

[Hithaeglir]

Lord of the rings--->O άρχοντας των δαχτυλιδιών

The Picture of Dorian Gray--->Tο Πορτραίτο του Ντόριαν Γκρέυ

The Ingenious Gentleman Don Quixote of La Mancha---> Ο ευφάνταστος ευπατρίδης Δον Κιχώτης της Μάντσας

Gulliver's Travels--->Τα ταξίδια του Γκιούλιβερ

Dangerous Liaisons-->Επικίνδυνες σχέσεις

The Count of Monte Christo--->Ο κόμης του Μόντε Κρίστο

Odyssey--->Οδύσσεια

Iliad--->Ιλιάδα

In Search of Lost Time--->Αναζητώντας τον χαμένο χρόνο

Journey to the End of the Night--->Ταξίδι στο τέλος της νύχτας

The Prime of Miss Jean Brodie--->Η μις Μπρόντι στο άνθος της ηλικίας της

The Seasons--->Οι εποχές

The Great Gatsby--->Ο υπέροχος Gatsby

[Leliana]

Lord of the rings
The Picture of Dorian Gray
The Ingenious Gentleman Don Quixote of La Mancha
Gulliver's Travels
Dangerous Liaisons
The Count of Monte Christo
Odyssey
Iliad
In Search of Lost Time
Journey to the End of the Night
The Prime of Miss Jean Brodie
The Seasons
The Great Gatsby

In German:

Herr der Ringe

Das Bildnis der Dorian Grey

Der sinnreiche Junker Don Quijote von der Mancha

Gulliver's Reisen

Gefährliche Liebschaften

Der Graf von Monte Christo

Odysseus

Ilias

Auf der Suche nach der verlorenen Zeit

Reise ans Ende der Nacht

Die besten Jahre der Miss Jean Brodie

Die Jahreszeiten

Der große Gatsby

[Alenka]

Lord of the rings - Gospodar Prstanov

The Picture of Dorian Gray - Slika Doriana Graya

The Ingenious Gentleman Don Quixote of La Mancha - Bistroumni vitez Don Kihot iz Manče

Gulliver's Travels - Guliverjeva potovanja

Dangerous Liaisons - Nevarna razmerja

The Count of Monte Christo - Grof Monte Cristo

Odyssey - Odiseja

Iliad - Iliada

In Search of Lost Time - Iskanje izgubljenega časa

Journey to the End of the Night - Potovanje na konec noči

The Prime of Miss Jean Brodie - Najlepša leta gospodične Jean Brodie

The Seasons - Letni časi

The Great Gatsby - Veliki Gatsby

[Han Cholo]

Lord of the rings - Señor de los anillos
The Picture of Dorian Gray - El retrato de Dorian Gray
The Ingenious Gentleman Don Quixote of La Mancha - El Ingenioso Hidalgo Don Quijote de la Mancha
Gulliver's Travels - Viajes de Gulliver
Dangerous Liaisons - Relaciones Peligrosas
The Count of Monte Christo - El Conde de Montecristo
Odyssey - Odisea
Iliad - Iliada
In Search of Lost Time - En busqueda del tiempo perdido
Journey to the End of the Night - Viaje al final de la noche
The Prime of Miss Jean Brodie - I'm not sure about this one.
The Seasons - Estaciones/Temporadas/Épocas, there are far too many equivalent words.
The Great Gatsby - El Gran Gatsby

[Comte Arnau]

These are the most common translations of those titles in Catalan. Most of the books have been translated more than once, so there may be other translations I don't know about.

The Lord of the Rings - El Senyor dels Anells
The Picture of Dorian Gray - El retrat de Dorian Gray
The Ingenious Gentleman Don Quixote of La Mancha - L'enginyós cavaller Don Quixot de La Manxa --Depending on the translation, the Spanish words hidalgo and La Mancha were left in Spanish, as words like cavaller 'knight, gentleman' don't really translate the whole concept of the very Spanish hidalgo.
Gulliver's Travels - Els viatges de Gulliver
Dangerous Liaisons - Les relacions perilloses
The Count of Monte Christo - El comte de Montecristo
Odyssey - Odissea or L'Odissea, depending on the translation.
Iliad - Ilíada
In Search of Lost Time - A la recerca del temps perdut
Journey to the End of the Night - Viatge al fons de la nit
The Prime of Miss Jean Brodie - El punt dolç de la senyoreta Brodie --I found this translation funny, but it's the published one. Maybe there's an intended pun I can't see because I haven't read this novel.
The Seasons --I don't know what work this title exactly refers too. The literal translation would be Les estacions.
The Great Gatsby - El gran Gatsby

[alfieb]

Lord of the rings
The Picture of Dorian Gray
The Ingenious Gentleman Don Quixote of La Mancha
Gulliver's Travels
Dangerous Liaisons
The Count of Monte Christo
Odyssey
Iliad
In Search of Lost Time
Journey to the End of the Night
The Prime of Miss Jean Brodie
The Seasons
The Great Gatsby

One of my native languages is Brooklynese:

Lord of the rings: The fuckin' Hobbit movies with Frodo
The Picture of Dorian Gray: Fifty Shades of Grey?
The Ingenious Gentleman Don Quixote of La Mancha: Don Coyote
Gulliver's Travels: Gilligan's Island
Dangerous Liaisons: Cinemax
The Count of Monte Christo: The Count of Monty Crisco
Odyssey: That book by Homer Simpson
Iliad: That Cuban kid who got sent back by Bill Clinton
In Search of Lost Time: You and me both, brother.
Journey to the End of the Night: Last Saturday at a club in the city
The Prime of Miss Jean Brodie: Did you bang her? You got any pictures?
The Seasons: We only have Summer and Winter here.
The Great Gatsby: That movie with Leo DiCaprio

[Mens-Sarda]

I try in Logudorese (Sardinian language spoken in the central north of Sardinia)

Lord of the rings - Su Segnore de sos Aneddos

The Picture of Dorian Gray - Su rettratu de Dorian Gray

The Ingenious Gentleman Don Quixote of La Mancha - Su ingéniosu galantómine Don Quixote de Sa Mancha

Gulliver's Travels - Viazzos de Gulliver

Dangerous Liaisons - Perigulosas relassiones

The Count of Monte Christo - Su Conte de Monte Christus

Odyssey - Odissea

Iliad - Iliade

In Search of Lost Time - Buscande su tempu perdidu

Journey to the End of the Night - Viazzu a sa fine de sa notte

The Prime of Miss Jean Brodie - Sa prima de sa segnorina Jean Brodie

The Seasons - Sas istajones

The Great Gatsby - Su Gràndhe Gatsby

same here in Logudorese from my zone, with just little differences

Gulliver's Travels - Viazzos de Gulliver - Viaggios de Gulliver (never heard "viazzos" in typical Logudorese, I think it's more Nuorese)
Dangerous Liaisons - Perigulosas relassiones - Relatziones perigulosas
The Count of Monte Christo - Su Conte de Monte Christus - Su Conte de Monte Christos
In Search of Lost Time - Buscande su tempu perdidu - In chirca de su Tempus Pèrdidu (buscande seems a lot Nuorese)
The Great Gatsby - Su Gràndhe Gatsby - Gatsby su Mannu (we also use Grande, very rarely, only in metaphorical meaning)

[Hercus Monte]

One of my native languages is Brooklynese:

Lord of the rings: The fuckin' Hobbit movies with Frodo
The Picture of Dorian Gray: Fifty Shades of Grey?
The Ingenious Gentleman Don Quixote of La Mancha: Don Coyote
Gulliver's Travels: Gilligan's Island
Dangerous Liaisons: Cinemax
The Count of Monte Christo: The Count of Monty Crisco
Odyssey: That book by Homer Simpson
Iliad: That Cuban kid who got sent back by Bill Clinton
In Search of Lost Time: You and me both, brother.
Journey to the End of the Night: Last Saturday at a club in the city
The Prime of Miss Jean Brodie: Did you bang her? You got any pictures?
The Seasons: We only have Summer and Winter here.
The Great Gatsby: That movie with Leo DiCaprio

sounds like a very cultured tongue they have there.

Der Graf von Monte Christo

this one I find interesting.
Some say graf some, say count.