The name, The Unknown Child, refers to a small boy whose remains were recovered but not identified after the sinking of the RMS Titanic. Specifically, it may refer to:

Eino Viljami Panula, a 13-month old Finnish boy believed (2002–2007) to be the Unknown Child.

Sidney Leslie Goodwin, a 19-month old English boy who was, in 2007, identified as the child.