Yes there is a Toilet Museum in Delhi, India. Name of Museum is “Sulabh International Museum of Toilets”. It is managed by Sulabh International. Sulabh International is an India-based social service organization that works to promote human rights, environmental sanitation, non-conventional sources of energy, waste management and social reforms through education.
Museum’s website: www.sulabhtoiletmuseum.org
Source: wikipedia and google