International Grandmother Names

African
Berber dialect - Henna
Botswanan - Nkuku
Shona dialect - Ambuya
Swahili - Bibi, Nyanya
Venda dialect - Makhulu
Xhosa dialect - Umakhulu
Zulu dialect - Ugogo

Afrikaans - Ouma

Albanian - Gjyshe

American Indian
Cherokee - E-Ni-Si
Cheyenne - Neske'e
Eskimo, Inupiaq dialect - Aanaga
Navajo (maternal) - Ma'saani
Navajo (paternal) - Nali'
Ojibway - Nookmis, Nookomis

Arabic
Formal - Jaddah, Jiddah
Informal - Teta

Armenian - Tatik

Basque - Amona

Belarusen - Babka

Breton - Mamm-gozh

Cajun - MawMaw

Catalan - Ŕvia, Iaia

Chinese
Cantonese Paternal - Ngin
Cantonese Maternal - PoPo
Mandarin Paternal - Zumu
Mandarin Maternal - Wŕi pó

Croatian - Baka

Danish
Formal - Bedstemoder
Paternal - Farmor
Maternal - MorMor

Dutch - Grootmoeder

Esperanto - Avin

Estonian - Va naema

Filipino Cebuano
Formal - Apohang babae
Informal - Lola

Finnish - Isoaiti, Mummo

Flemish - Bomma

French
Formal - Grand-mčre
Informal - Gra-mere, Mémé
Semi-formal - Grandmaman

Galician - Avoa

Georgian - Bebia

German
Formal - Grossmutter
Informal - Oma

Greek - Yaya, Gigia

Guarani (South America) - Jaryi

Hawaiian
Formal - Kapuna Wahine
Informal - Puna, TuTu, Kuku

Hebrew - Savta, Safta

Hungarian
Formal - Nagyanya
Informal - Yanya, Anya

Icelandic - Amma

India
Bengali Paternal - Thakur-ma
Bengali Maternal - Dida, Didima
Hindi - Daadima
Southwestern - Ajji
Urdu Paternal - Daadi
Urdu Maternal - Nanni

Indonesian - Nenek

Irish/Gaelic
Formal - Seanmhair
Informal - Maimeo or Morai, Mavoureen

Italian - Nonna

Japanese
Formal - Obaasan, Oba-Chan, Sobo (one's own grandmother)
Informal - Obaba

Korean - Halmoni

Latvian - Vecmate

Lebanese - Sitti

Malagasy - Nenibe

Maltese - Nanna

Norwegian - Bestemor, Godmor
Paternal - Farmor
Maternal - MorMor

Polish
Formal - Babka, Babcia,
Informal - Jaja, Zsa-Zsa, Busha, Gigi

Portuguese - Avo

Romanian - Bunica

Russian - Babushka

Sanskrit
Paternal - Pitaamahii
Maternal - Maataamahii

Serbian - Baba, Mica

Slovakian - Babicka

Slovenian - Stara Mama

Spanish
Formal - Abuela
Informal Diminutive - Abuelita, Uelita, Tita, Abby, Abbi, Lita

Swedish
Paternal - FarMor
Maternal - MorMor

Swiss
Formal - Grossmami

Syrian - Teta, Jadda

Tamil - Pathi

Thai
Maternal - Ya
Paternal - Yai

Turkish - Buyuk Anne, Anneanne, Babanne

Turkmen - Ene

Ukranian
Formal - Babusia
Informal - Baba

Uzbek - Bibi

Vietnamese
Formal - Danh tá
Informal - Ba, Bé giŕ

Welsh
Southern - Mamgu
Northern - Naini, Nain

Yiddish - Bubby, Bubbe

for grandmothers:

for grandfathers: