Johanna "Jo" Dalmolen (later van der Waals, 7 September 1912 – 18 November 2008) was a Dutch sprint runner. In 1932, she was part of the 4×100 m relay team that set a national record and barely made it to the Olympics – due to the overall depression the Dutch government refused to send the team to Los Angeles, and the tickets were bought thanks to local fundraising.