凯撒鸡尾酒又称血腥凯撒，是加拿大盛行的鸡尾酒。它以伏特加、蕃茄蛤蜊汁（Clamato）、辣酱和辣酱油调制而成，通常搭配冰块、盛装于大玻璃杯，并在杯缘沾上香芹盐，再以芹菜茎和莱姆片装饰。

它在1969年由艾伯塔省卡加利的一位餐厅老板华特·切尔（Walter Chell）发明，目的是为了庆祝城内一家新意大利餐馆的开幕。它很快地风靡了全加拿大，但在加拿大以外地区几乎没没无闻。据估计，加拿大每年约消费超过3亿5000万杯凯撒鸡尾酒。凯撒鸡尾酒也是许多酒类饮品的灵感来源。

A Caesar or Bloody Caesar is a cocktail created and primarily consumed in Canada. It typically contains vodka, Clamato (a proprietary blend of tomato juice and clam broth), hot sauce and Worcestershire sauce, and is served with ice in a large, celery salt-rimmed glass, typically garnished with a stalk of celery and wedge of lime. What distinguishes it from a Bloody Mary is the inclusion of clam broth. The cocktail may also be contrasted with the Michelada, which has similar flavouring ingredients but uses beer instead of vodka.