纸钱又称冥纸、冥镪、金纸、银纸、纸楮等，琉球语称为打纸Tom仔（打チ纸、ウチカビ）或纸钱（纸钱、カビジン），是东亚传统祭祀鬼神、祖先时火化的祭祀品之一。

大多数纸钱是必须用火焚化的。不过有几种不必焚烧的纸钱，如墓纸即为其一。古代墓祭用彩色纸剪成长缕，悬挂墓上称为挂钱，继承古俗，现代墓纸也不用烧，扫墓时用碎石子、土块压在坟墓上，代表修缮坟墓之意。在死者丧事、移动棺材时，也有家属会将纸钱洒在道路、河川上，以供路上、河川的鬼神花用，避免刁难死者亡魂，称为「买路钱」。早时每至险阻、意外频生之地，则会沿路丢洒纸钱，以安山川神鬼，枉死孤魂，避免其恶作剧甚至捉拿替身。另也有人在棺材中放入纸钱陪葬的。

Joss paper (simplified Chinese:金纸; traditional Chinese:金紙; pinyin:jīnzhǐ; literally: "gold paper", Chinese:陰司紙; pinyin:yīnsīzhǐ, Chinese:紙錢; pinyin:zhǐqián, or simplified Chinese:冥币; traditional Chinese:冥幣; pinyin:míng bì; literally: "shade/dark money" / Vietnamese: vàng mã in the North or giấy tiền vàng bạc in the South), also known as ghost money, are sheets of paper and/or paper-crafts made into burnt offerings which are common in various Asian religious practices including the veneration of the deceased on holidays and special occasions. Joss paper, as well as other papier-mâché items, are also burned in various Asian funerals, to ensure that the spirit of the deceased has lots of good things in the afterlife.