烟灰缸，是一个盛载烟灰、烟头的器皿，形状似一个开口碗、有盖的盒、邮箱，或者垃圾桶等。烟灰缸用料为耐燃物料，包括石、瓦、金属等。礼品公司不少利用烟灰缸表面作广告宣传。在禁烟的社区，有放置烟灰缸的场所通常是吸烟区。

An ashtray is a receptacle for ash from cigarettes and cigars. Ashtrays are typically made of fireproof material such as glass, heat-resistant plastic, pottery, metal, or rock. Improvised ashtrays may include coffee cans and glasses.

The most common ashtray design is a shallow cylinder with a flat base, to rest on a table. Other ashtrays, particularly in public places, are wall mounted, and larger than standard tabletop ashtrays due to the increased use they receive. Many ashtrays have notches at the rim, to hold cigarettes and/or a cigar. In Spain, some ashtrays consist of two interlocking parts, the bottom of which is filled with water. Ashtrays are also often built into cars and dustbins, and provided in toilets and other public places.