Bike City
Local bicycle rental service.
http://www.bikecity.nl/

Frederic Rentabike
Hires out bikes as well as houseboats and apartments.
http://www.frederic.nl/

Holland Cycle Routes
Recommended cycle routes.
http://www.tribute.nl/nbt/fietsen/

Let's Go
Details of bike hire firms in Amsterdam.
http://www.letsgo.com/AMST/15-Service-172

Mike's Bike Tours
Offers group tours, private tours and bike rental by the day.
http://www.mikesbikeamsterdam.com/