The Sindhi cap (Urdu: سندھی ٹوپی) is a hat worn predominantly by the Sindhi people of Sindh, but also by the Baloch people and Seraiki people. Along with the ajrak, the Sindhi cap is regarded as an essential part of Sindhi culture and a symbol of Sindhi nationalism.

The hat is circular/cylindrical except for a portion cut out in the front to expose the forehead. Intricate geometrical designs are embroidered on the hat, and very often small pieces of mirror are sewed into it also.

In Sindhi culture, the Sindhi cap is often given as a gift or as a sign of respect, along with the ajrak.

In December 2009, Sindhi Cap Day was celebrated in Pakistan's Sindh province to celebrate the Sindhi cap, and Sindhi culture in general. In 2010, the day was renamed to Sindh Culture Day.