Some 5,000 people from various community groups attended the Community Goodwill Gathering at Khadijah Mosque in Geylang Serai on Sunday.
Organisers hope it can mobilise the multi-racial community and promote religious harmony.
In a statement, Mr Chan said: "The Community Goodwill Gathering organised by Khadijah Mosque encourages bonding not only amongst the Muslims but also other races and religions. It is a good example of how mosques and other places of worship can help promote religious harmony in Singapore.”
Several activities were held at the mosque, including health screening, health promotion and anti-crime exhibitions.
Packets of briyani were also sold for charity.
The inaugural Community Goodwill Gathering for Khadijah Mosque was held in 2001, in front of Eunos MRT station.
Dr Mohamed bin Ali, member of the Khadijah Mosque Management Board, said: "We've been playing a role in promoting this religious harmony for many years, but (this time) we made it coincide with our mosque fundraising project, which is the charity-briyani drive, and also some of our religious activities here."
Assoc Prof Fatimah Lateef, MP for Marine Parade GRC, said: "If you trace many of the crises that happen in the world today, for a lot of them, the root cause is actually inter-ethnic misunderstanding, or different groups having misunderstandings on different issues.
“I think it is important that during peaceful times, we build and strengthen our friendships and bonds."