Tin oxide is widely used in the production of ceramics and glass, where it serves as an opacifier to provide a white, opaque appearance. It is a key component in glazes and enamels, enhancing durability and scratch resistance. In the electronics industry, tin oxide is utilized in the manufacture of conductive coatings and transparent conducting films, especially when doped with elements like antimony or fluorine, making it suitable for touchscreens, solar cells, and electrostatic shielding.

It also plays an important role in gas sensors due to its sensitivity to changes in environmental gases, such as carbon monoxide and flammable gases, making it valuable in safety and environmental monitoring devices. In the field of catalysis, tin oxide acts as a support material or active catalyst in various oxidation reactions.

Additionally, it is used in some polishing powders for fine finishing of optical components and jewelry. Due to its chemical stability and non-toxic nature, tin oxide finds application in certain cosmetic formulations as a pearlescent agent and abrasive.