  As symbolized by the Nobel Prize in Physics 2016, "topology" has been
recognized as an essential standpoint to understand and control the physics of
condensed matter. This concept may be spreading even into application areas
such as novel electronics. In this trend, there has been reported a number of
study for the oxide films and heterostructures with topologically non-trivial
electronic or magnetic states. In this review, we overview the trends of new
topological properties and functionalities in oxide materials with sorting out
a number of examples. The technological advances in oxide film growth achieved
over the last few decades are now opening the door for harnessing novel
topological properties.
