建议速限（英文：Advisory speed limit）是一个由道路管理方制定的建议车速限制，不具有强制性。在欧美国家建议速限常设置在行人密集路段，例如市中心和学校路段，也会设置在路况复杂的路段，例如弯道和施工路段。在使用该法规的国家，超过该速度并不会受处罚，但如果因为超出建议速限造成事故，肇事者需要担负全部责任。

建议速限路标的设置和样式在各个国家不一定相同，澳大利亚在其公路路网上大量使用，而在德国，建议速限在全高速公路（Autobahn）路网都是有效的（但可被设置的最高速限取代），英国以及美国的仅在危险路段例如急弯路段设置建议速限。

An advisory speed limit is a speed recommendation by a governing body, used when it may be non-obvious to the driver that the safe speed is below the legal speed. It is a posting which approximates the Basic Speed Law or rule, and is subject to enforcement as such. Advisory speed limits are often set in areas with many pedestrians, such as in city centres and outside schools, and on difficult stretches of roads, such as on tight corners or through roadworks. While travelling above the advisory speed limit is not illegal per se, it may be negligence per se and liability for any collisions that occur as a result of traveling above the limit can be placed partially or entirely on the person exceeding the advisory speed limit.