Kupenda is the Swahili verb for "to love."  Following is a list of showing " I Love You" in different languages. (from an unknown source)


Afrikaans: Ek is lief vir jou
Albanian: Te dua
Arabic: Ana behibak (to male) or Ana behibek (to female)


Armenian: Yes kez sirumem
Basque: Maitea haut
Bavarian: I mog di narrisch gern


Bengali: Ami tomake bhalobashi
Bulgarian: Obicham te
Burmese: Nin ko nga chitde or Chit pa de


Cambodian: Bon sro lanh oon
Catalan: T'estimo
Cherokee:  Tsi ge yu i


Cheyenne:  Ne mohotatse
Chichewa:  Ndimakukonda
Chickasaw:  Chiholloli


Chinese:  Ngo oi ney or Wo ai ni
Corsican:  Ti tengu caru
Croatian:  Volim te


Czech:  Miluji te
Danish:  Jeg elske dig
Dholuo (Kenyan tribe):  Aheri  ~ contributed by Evelyn D.


Dutch:  Ik hou van je
Elvish:  Amin mela lle  from  The Lord of the Rings  by J.R.R. Tolkien
English:  I love you


Esperanto:  Mi amas vin
Estonian:  Mina armastan sind
Ethiopian:  Afgreki'


Farsi:  Mahn doostaht doh-rahm 
Filipino:  Mahal kita 
Finnish:  Mina rakastan sinua


Flemish:  Ik zie oe geerne
French:  Je t'aime
Gaelic:  Ta gra agam ort


Georgian:  Mikvarhar
German:  Ich liebe dich
Greek:  S'agapo


Greenlandic:  Asavakit
Gujarati:  Mai thara prem karu chu 
Haitian Creole:  Mwen renmen'w
Hawaiian:  Aloha au ia'oe


Hebrew:  Ani ohev otah (to female) or Ani ohevet othah (to male)
Hindi:  Mai tumase pyar karata hun or Mai tumase pyar karati hun
Hopi:  Nu' umi unangwa'ta


Hungarian:  Szeretlek
Icelandic:  Eg elska thig
Indian Gujarati dialect:  Tane prem karoo choo


Indonesian:  Saya cinta padamu
Irish:  Taim i'ngra leat
Italian:  Ti amo or Ti voglio bene


Japanese:  Ai shite ru or Kimi o ai shiteru
Kannada (India):  Naanu ninnanu preethisuthene 

Korean:  Sarang hapnida


Kurdish:  Ez te hezdikhem
Lao:  Khoi huk chau
Latin:  Te amo


Latvian:  Es tev milu
Lebanese:  Bahibak
Lithuanian:  As myliu tave


Luo:  Aheri
Macedonian:  Te sakam
Malay:  Saya cintamu or Saya sayangmu


Maltese:  Inhobbok 
Mandarin:  Wo ai ni
Mohawk:  Konoronhkwa or Kanbhik


Moroccan:  Ana moajaba bik
Navajo:  Ayor anosh'ni
Norwegian:  Jeg elsker deg or elsker deg 


Pakistani:  Muje tum se mu habbat hai 
Persian:  Doostet daram or Tora dost daram
Philippines:  Mahal kita  ~ contributed by Mai.


Pig Latin:  Ie Ovele Ouye
Polish:  Kocham cie
Portuguese:  Eu te amo


Romanian:  Te iubesc  ~ contributed by Steve K.
Russian:  La liubliu tebia or Ya vas lyublyu
Scottish Gaelic:  Tha gra dh agam ort


Serbian:  Ljubim te or Ja te volim


Sign language:  I
-- point at self with index finger.
love
-- hold crossed hands over your chest.
you
-- point with index finger to the other person.


Sioux:  Techihhila
Slovak:  Lubim ta
Slovenian:  Ljubim te


South African:  Ek het jou lief
Spanish:  Te amo 
Swedish:  Jag alskar dig


Swiss:  Ch'ha di ga'rn
Syrian:  Bhebbek (to female) or Bhebbak (to male)
Tagalog:  Iniibig kita or mahal kita


Taiwanese:  Gwa ai lee
Tahitian:  Ua here vau ia oe
Thai:  Phom rak khun or Ch'an rak khun


Tswana:  Ke a go rata 
Tunisian:  Ha eh bak
Turkish:  Seni seviyorum
Ukrainian:  Ya tebe kahayu


Urdu:  Me aap se pyaar karthi houn
Venda:  Ndi a ni funa 
Vietnamese:  Anh yeu em (to female) or Em yeu anh (to male)


Welsh:  Rwy'n dy garu di
Wolof (Western Africa, mostly Senegal area):  Nop nala
Yiddish:  Ikh hob dikh lib


Yugoslavian:  Ya te volim
Zulu:  Ngiyakuthanda
Zuni:  Tom ho'ichema