don't count your chickens before they're hatched

Etymology
First attested in English in Thomas Howell's 1570 New Sonnets and Pretty Pamphlets in the couplet, possibly deriving from similar medieval and early modern fables and maxims.

Proverb

 * 1) One should not depend upon a favorable (and typically overoptimistic) outcome to one's plans until it is certain to occur.

Translations

 * Afrikaans: moenie die beer se vel verkoop voordat hy geskiet is nie
 * Albanian: peshku në det, tigani në zjarr
 * Arabic: لَا تَشْتَرِي ٱلسَّمَكَ وَهُوَ فِي ٱلْبَحْرِ بَلِ ٱنْتَظِرْ حَتَّى يُصْطَادَ
 * Catalan: no diguis blat fins que no sigui al sac i ben lligat
 * Chinese:
 * Mandarin: (勿打)如意算盤, (別), (別做)白日夢
 * Czech: neříkej hop, dokud nepřeskočíš,
 * Danish: pels ikke bjørnen før den er skudt
 * Dutch:
 * Esperanto: la manĝota fiŝo estas ankoraŭ en la rivero
 * Finnish: älä nuolaise ennen kuin tipahtaa, älä nylje karhua ennen kuin se on kaadettu
 * French:
 * Friulian: no stâ vendi le piel dal ors prime di vêlu copât
 * German: ,
 * Hindi: सूत न कपास जुलाहों में लट्ठम-लट्ठा
 * Hungarian: ,
 * Icelandic: ekki er sopið kálið þó í ausuna sé komið, fyrr skal fuglinn veiddur en steiktur
 * Irish: ní breac é go raibh sé ar an bport
 * Italian: non dire gatto se non ce l'hai nel sacco, non cantare vittoria troppo presto
 * Japanese:
 * Korean: 김칫국부터 마시지 마라
 * Latin: ante victoriam ne canas triumphum
 * Lithuanian: viščiukus skaičiuoja vakarais
 * Maori: kāti te toitoi okewa, ahakoa iti te koutu whenua e kore e taea te parepare
 * Navajo: tʼáadoo danitʼání íítiʼ
 * Norwegian:
 * Bokmål:
 * Persian: جوجه رو آخر پاییز می شمارند
 * Polish: nie dziel skóry na niedźwiedziu, ,
 * Portuguese: não conte com o ovo dentro da galinha, não conte com o ovo antes da galinha botar
 * Romanian: toamna se numără bobocii, nu vinde blana ursului din pădure, nu zice hop până nu ai sărit
 * Russian: цыпля́т по о́сени счита́ют, не дели́ шку́ру неуби́того медве́дя, не говори́ «гоп», пока́ не перепры́гнешь
 * Sanskrit: अजातपुत्रनामोत्कीर्तन
 * Scottish Gaelic: na h-abair diug a choidhche ris an eun gus an dig e às an ugh, dèan fanaid air do sheann-bhrògan nuair a gheibh thu do bhrògan ùra, mol an latha math mu oidhche, mol an deireadh
 * Spanish: no vendas la piel del oso antes de cazarlo, hasta el rabo, todo es toro, no echar las campanas al vuelo
 * Sranan Tongo: no kosi kaiman mama fosi yu abra liba
 * Swedish: sälj inte skinnet innan björnen är skjuten, ta inte ut segern i förskott
 * Telugu: ఆలు లేదు, చూలు లేదు, కొడుకు పేరు సోమలింగము
 * Ukrainian: не хвали́ день до ве́чора, хвали́ день уве́чері, а життя́ пе́ред сме́ртю
 * Walloon:


 * German: mach keine Milchmädchenrechnung auf