Who is the current president of singapore?

As of my last knowledge update in September 2021, Halimah Yacob was the current president of Singapore. She was elected in 2017 and is the first woman to hold this office.

Please note that this information may be outdated as my knowledge cutoff date is September 2021, and there may have been developments or elections since then. For the most up-to-date information, I recommend visiting the official website of the Singapore government or other reliable news sources.