To provide an electronic apparatus, an estimation system, a control method and a control program that can achieve improved convenience.SOLUTION: An electronic apparatus 100 has blood flow rate measuring units 112a and 112b that measure a blood flow rate of a subject, and a control unit 122 that estimates a sleep state of the subject on the basis of the blood flow rate of the subject.SELECTED DRAWING: Figure 3【課題】利便性を向上可能な電子機器、推定システム、制御方法及び制御プログラムを提供する。【解決手段】電子機器１００は、被検者の血流量を測定する血流量測定部１１２ａ及び１１２ｂと、被検者の血流量に基づいて、被検者の睡眠状態を推定する制御部１２２と、を備える。【選択図】図３
