An information processing apparatus, an imaging apparatus and an information processing method, and a computer program are provided. An information processing apparatus includes: a state detecting part which detects physical fluctuations that are generated in association with a user carrying the information processing apparatus; and a control part which receives detection information of the state detecting part, and which shifts a state to a hot standby state in which a system startup process necessary prior to data processing in the information processing apparatus is completed, or which executes a process to continue the hot standby state, based on determination that the information processing apparatus is being carried by the user.