有效剂量（英语：Effective dose）可能指：

• 有效剂量 (药理学)，能达到治疗作用的药理剂剂量。
• 有效剂量 (辐射)

Effective dose is a dose quantity in the International Commission on Radiological Protection system of radiological protection.

It is the tissue-weighted sum of the equivalent doses in all specified tissues and organs of the human body and represents the stochastic health risk to the whole body, which is the probability of cancer induction and genetic effects, of low levels of ionising radiation. It takes into account the type of radiation and the nature of each organ or tissue being irradiated, and enables summation of organ doses due to varying levels and types of radiation, both internal and external, to produce an overall calculated effective dose.