The grant will help the museum to expand its community work
An award of £47,000 to Lyme Regis Museum by a charitable trust will help the museum become "a major educational resource," says its curator.
The money from The Monument Trust will pay for a new "outreach" post and develop the museum's expansion plans.
Known for its fossil collection, the museum is on the site of Mary Anning's home - Lyme's first fossil hunter.
Curator Mary Godwin said: "We're thrilled. It means we can take some big steps forward."
She said the money will be put to good use:
"Some of the funding will go towards the cost of our building conservation work done this year.
"This will free up some of the Museum Friends' funds which can now go towards establishing a development office for our much-needed museum extension.
"And being able to appoint a new member of staff dedicated to education and outreach will make a massive difference to the work we do with schools and the community.
"We hope to work closely with other organisations in Lyme to maximise the benefits to the town."