Afrikaans
Ek het jou liefe
Ek is lief vir jou

Albanian
te dua
te dashuroj

Alentejano(Portugal)
Gosto De Ti, Porra!

Alsacien
Ich hoan dich gear

Amharic
Afekrishalehou

Arabic
Ana Behibak (to a male)
Ana Behibek (to a female)
Ib'n hebbak.
Ana Ba-heb-bak
nhebuk
Ohiboke (male to female)
Ohiboka (female to male)
Ohibokoma (male or female to two males or two females)
Nohiboke (more than one male or female to female)
Nohiboka (male to male or female to male)
Nohibokoma (m. to m. or f. to two males or two females)
Nohibokom (m. to m. or f. to more than two males)
Nohibokon (m. to m. or f. to more than two females)
Bahibak (female to male)

Arabic (not standard)
Bahibik (male to female)
Benhibak (more than one male or female to male)
Benhibik (male to male or female to female)
Benhibkom (m. to m. or female to more than one male)
Moi tomak bhal pau

Basc
Nere Maitea

Batak
Holong rohangku di ho

Bavarian
I mog di narrisch gern

Bengali
Ami tomAy bhAlobAshi
Ami tomake bhalobashi.

Berber
Lakh tirikh

Bicol
Namumutan ta ka

Bolivian Quechua
qanta munani

Bulgarian
Obicham te

Burmese
chit pa de

Cambodian
Bon sro lanh oon
kh_nhaum soro_lahn nhee_ah

Canadian French
Sh'teme (spoken, sounds like this)

Cantonese
Moi oiy neya
Ngo oi ney

Catalan
T'estim (mallorcan)
T'estim molt (I love you a lot)
T'estime (valencian)
T'estimo (catalonian)

Cebuano
Gihigugma ko ikaw.

Chickasaw
chiholloli (first "i" nasalized)

Chinese
(see the entries for mandarin or cantonese!)

Corsican
Ti tengu cara (to female)
Ti tengu caru (to male)

Croatian
Volim te

Czech
miluji te
MILUJU TE! (colloquial form)

Danish
Jeg elsker dig

Dutch
Ik hou van jou
Ik ben verliefd op je

Ecuador Quechua
canda munani

English
I love you
I adore you

Esperanto
Mi amas vin

Estonian
Mina armastan sind
Ma armastan sind

Farsi
Tora dust midaram
Asheghetam
doostat dAram

Filipino
Mahal kita
Ini-ibig Kita

Finnish
Minä rakastan sinua

Flemish
Ik zie oe geerne

French
Je t'aime
Je t'adore

Friesian
Ik hald fan dei

Gaelic
Ta gra agam ort

German
Ich liebe Dich

Greek
s'ayapo (spoken s'agapo, 3rd letter is lower case 'gamma')

Greek (old)
(Ego) philo su (ego is only needed for emphasis)

Greenlandic
Asavakit

Gujrati
Hoon tane pyar karoochhoon.

Hausa
Ina sonki

Hawaiian
Aloha I'a Au Oe

Hebrew
Ani ohev otach (male to female)
Ani ohev otcha (male to male)
Ani ohevet otach (female to female)
Ani ohevet otcha (female to male)

Hessian
Ei, isch du Disch doch liebbe, gelle

Hindi
Mai tumase pyar karata hun (male to female)
Mai tumase pyar karati hun (female to male)
Main Tumse Prem Karta Hoon
Mai Tumhe Pyar Karta Hoon
Main Tumse Pyar Karta Hoon
Mai Tumse Peyar Karta Hnu
Mai tumse pyar karta hoo

Hokkien
Wa ai lu

Hopi
Nu' umi unangwa'ta

Hungarian
Szeretlek
Szeretlek te'ged

Icelandic
Eg elska thig

Indi
Mai Tujhe Pyaar Kartha Ho

Indonesian
Saya cinta padamu (Saya, commonly used)
Saya cinta kamu ( " )
Saya kasih saudari ( " )
Aku tjinta padamu (Aku, not often used)
Aku cinta padamu ( " )
Aku cinta kamu ( " )

Iranian
Mahn doostaht doh-rahm

Irish
taim i' ngra leat

Italian
ti amo (if it's a relationship/lover/spouse)
ti voglio bene (if it's a friend, or relative)

Japanese
Kimi o ai shiteru
Aishiteru
Chuu shiteyo
Ora omee no koto ga suki da
Ore wa omae ga suki da
Suitonnen
Sukiyanen
Sukiyo
Watashi Wa Anata Ga Suki Desu
Watashi Wa Anata Wo Aishithe Imasu
Watakushi-wa anata-wo ai shimasu
Suki desu (used at 1st time, like for a start, when you are not yet real lovers)
Kulo tresno

Kannada
Naanu Ninnanu Preethisuthene
Naanu Ninnanu Mohisuthene

Kiswahili
Nakupenda

Klingon
qabang
qaparHa' (depends where in the galaxy you are)

Korean
No-rul sarang hae (man to woman in casual relation)
Tangsinul sarang ha yo
Tangshin-ul sarang hae-yo
Tangsinul Sarang Ha Yo
Tangshin-i cho-a-yo (i like you, in a romantic way)
Nanun tangshinul sarang hamnida
Nanun Dangsineul Mucheog Joahapnida
Nanun Dangsineul Saranghapnida
Nanun Gdaega Joa
Nanun Gdaereul Saranghapnida
Nanun Neoreul Saranghanda
Gdaereul Hjanghan Naemaeum Alji
Joahaeyo
Saranghae
Saranghaeyo
Saranghapanida

Kurdish
Ez te hezdikhem (?)

Lao
Koi muk jao
Khoi huk chau

Latin
Te amo
Vos amo

Latin (old)
(Ego) amo te (ego, for emphasis)

Latvian
Es milu tevi (Pronounced "Ess tevy meeloo")

Lebanese
Bahibak

Lingala
Nalingi yo

Lisbon lingo
gramo-te bue', chavalinha

Lithuanian
TAVE MYLIU (ta-ve mee-lyu)

Lojban
mi do prami

Luo
Aheri

Macedonian
SAKAM TE!

Madrid lingo
Me molas, tronca

Malay
Saya cintakan mu
Saya sayangkan mu

Malay/Indonesian
Saya sayangkan engkau
Saya cintakan awak

Malayalam
Njyaan Ninne' Preetikyunnu
Njyaan Ninne' Mohikyunnu.
Ngan Ninne Snaehikkunnu

Malaysian
Saya Cintamu
Saya Sayangmu
Saya Cinta Kamu

Mandarin
Wo ai ni (Wo3 ai4 ni3 in tonal notation)

Marathi
me tujhashi prem karto (male to female)
me tujhashi prem karte (female to male)
Mi tuzya var prem karato

Mohawk
Konoronhkwa

Navaho
Ayor anosh'ni

Ndebele
Niyakutanda

Norwegian
Eg elskar deg (Nynorsk)
Jeg elsker deg (Bokmaal) (pronouncedyai elske dai)

Op
Op Lopveop Yopuop

Osetian
Aez dae warzyn

Pakistani
Mujhe Tumse Muhabbat Hai

Persian
Tora dost daram

Pig Latin
Ie Ovele Ouye

Polish
Kocham Cie
Ja cie kocham
Yacha kocham
Kocham Ciebie

Portuguese
Amo-te
Eu te amo

Punjabi
Mai taunu pyar karda
Main Tainu Pyar Karna

Quenya
Tye-mela'ne

Romanian
Te iu besc
Te Ador

Russian
Ya vas liubliu
Ya tebya liubliu
Ya polubeel s'tebya

Russian (malincaya)
Ya Tibieh Lublue

Scot Gaelic
Tha gra\dh agam ort

Serbian
ljubim te (I kiss you/love you, 'lj' pronounced like 'll' in Spanish, one sound, 'ly'ish)

Serbocroatian
Volim te
Ljubim te

Shona
Ndinokuda

Sinhalese
Mama oyata adarei

Sioux
Techihhila

Slovak
lubim ta

Slovene
ljubim te

Spanish
Te quiero
Te amo

Srilankan
Mama Oyata Arderyi

Swahili
Naku penda (followed by the person's name)

Swedish
Jag älskar dig

Swiss-German
Ch'ha di gärn

Syrian/Lebanese
BHEBBEK (to a female)
BHEBBAK (to a male)

Tagalog
Mahal kita

Ini-ibig Kita

Tahitian
Ua Here Vau Ia Oe

Tamil
Ni yaanai kaadli karen (You love me)
n^An unnaik kAthalikkinREn (I love you)
Naan Unnai Kadalikiren

Tcheque
MILUJI TÊ

Telugu
Neenu ninnu pra'mistu'nnanu

Telugu/india
Nenu Ninnu Premistunnanu

Thai
Phom Rak Khun (formal, male to female)
Ch'an Rak Khun (formal, female to male)
Khao Raak Thoe (affectionate, sweet, loving)
Phom Rak Khun

Tunisian
Ha eh bak *

Turkish
Seni seviyo*rum (o* means o ô)
Seni Seviyurum
Seni Seviyorum

Ukrainian
ja tebe koKHAju (real true love)
ja vas koKHAju
ja pokoKHAv tebe
ja pokoKHAv vas

Urdu
Mujhe tumse mohabbat hai
Main Tumse Muhabbat Karta Hoon

Vietnamese
Em yêuê anh (woman to man)
Toi yeu em
Anh yêu em (man to woman)

Vlaams
Ik hue van ye

Vulcan
Wani ra yana ro aisha

Welsh
'Rwy'n dy garu di.
Yr wyf i yn dy garu di (chwi)

Yiddish
Ich libe dich
Ich han dich lib
Ikh Hob Dikh Lib

Yugoslavian
Ya te volim

Zazi
Ezhele hezdege (sp?)

Zulu
Mena Tanda Wena
Ngiyakuthanda!

Zuni
Tom ho' ichema