Geylang was a constituency of the Legislative Assembly of Singapore. It came into existence in 1955 by the delimiting of the preceding Katong Constituency of the Legislative Council. The constituency was split into Geylang East and Geylang West at the next election, in 1959.

Note: The Elections Department does not include rejected votes when calculating the vote shares of candidates. Hence, all candidates' vote shares will total to 100% at any given election (may not appear so in multi-way contests due to rounding).