青瓜酸奶酪酱汁（希腊语：τζατζίκι，[dzaˈdziki]或[dʒaˈdʒiki]，拼写作Tzatziki或tzadziki，英语发音：/zɑːdˈziːki/；土耳其语：cacık [dʒaˈdʒɯk]；阿尔巴尼亚语：xaxiq；波斯语：ماست و خیار‎）是一种源于希腊及土耳其的点酱，利用了青瓜（小黄瓜）及以羊奶（绵羊奶或山羊奶）制成的酸奶酪（脱乳清酸奶）来做，常见于前菜，被认为是一种可替代蛋黄酱的健康选择，可以用来涂面包（包括皮塔饼）。

Cacık (Turkish pronunciation: [dʒaˈdʒɯk]; Ottoman Turkish: جاجيق‎‎; Arabic:لبن وخيار‎; Persian: ماست و خیار ‎‎; Kurdish:caciq‎; Azerbaijani: cacıq; Greek:τζατζίκι [dzaˈdzici] or [dʒaˈdʒici], anglicised: /zɑːdˈziːki/ or /tsɑːtˈsiːki/, /tsæ-/) is a dish of seasoned, strained or diluted yogurt, eaten throughout the former Ottoman countries. It is similar to tarator in Balkan cuisine. It is made of salted strained yogurt or diluted yogurt mixed with cucumbers, garlic, salt, olive oil, sometimes with vinegar or lemon juice, and some herbs like dill, mint, parsley, thyme etc. It is always served cold.