限价（Price limit）是金融交易中的一个名词，指的是在任意一个交易日中参照前一个交易日的结算价设置报价的上下限，对当日涨跌区间进行限制。限价的最高价称为“涨停”价（limit up），最低价称为“跌停”价（limit down）。在当个交易日中，交易系统不接受高于涨停价或低于跌停价的委托报价。

设置限价机制的目的主要是为了防止金融市场或期货市场的价格波动太大。在中国，A股与B股的涨跌幅限制一般为±10%；ST股票为±5%；新股上市首日则不做涨跌停限制。

A price limit is an established amount in which a price may increase or decrease in any single trading day from the previous day's settlement price.

In financial and commodity markets, prices are only permitted to rise or fall by a certain number of ticks (or by a certain percentage) per trading session. Similarly, index futures are often permitted to move a certain amount before the cash market opens.