The museum has contacted agencies with a brief for an upcoming project later this year.
Krow Communications, the incumbent creative agency, is not repitching for the business, which has been one of its longest-held accounts since winning it in 2008.
Malcolm White, Krow's co-founder, told Campaign: "We’ve enjoyed working with the Natural History Museum over the last eight years, but we’ve decided not to pitch for this visual identity brief."
In July Krow created "Colour and vision", a campaign to support the museum’s major summer exhibition. AKA handled the media planning and buying.
A spokesman for the Natural History Museum said: "The museum works with a number of agencies on different projects. The marketing team invited a couple of creative agencies to respond to a brief to deliver work later this year for an upcoming project. We are in the initial stages of the process."