Scinde Dawk (Sindhi: سندي ڊاڪ) was a postal system of runners that served the Indus Valley of Sindh, an area of present-day Pakistan.

This was a local Indus Valley system, inefficient and inadequate for the military and commercial needs of the British East India Company after their conquest of Sindh in February, 1843, following the Battle of Miani.

[3] Following the English example set by Rowland Hill, Frere improved upon the postal system of Sindh by introducing a cheap and uniform rate for postage, independent of distance travelled.

These stamps, first issued on 1 July 1852,[4] bore the Merchants' Mark of the British East India Company[5] in a design embossed on wafers of red sealing wax impressed on paper.

It had its own armies, coinage, and postal service; constructed railways and public works; and acted like an imperial force long before the Empire was established.