Ajrak (Sindhi: اجرڪ‎; Saraiki: اجرک) is a unique form of textile block-printing found primarily among the Sindhi diaspora and in the Sindh region of Pakistan, and in the Gujarat and Rajasthan states of India, there is also a village of Ajrakhpur in the Kutch district. In South Punjab the Saraiki ajrak variation can be found.

Ajrak textiles like shawls or dresses display special designs and patterns made using block printing with stamps. Ajrak is a symbol of Sindhi culture and traditions. Ajrak prints are famous in the neighboring area of Hyderabad, Sindh.

The word Ajrak (Sindhi: اجرڪ) derives from the Persian word ajar (Persian: اجر), meaning "brick," combined with the diminutive suffix -ak (Persian: ک), meaning "small," conveying a sense of unity and reflecting the craft's cultural journey and exchange with other traditions.

Early settlements in the lower Indus Valley cultivated and used Gossypium arboreum (tree cotton) to make cloth. These communities developed early textile skills that later fed into Sindhi block-print traditions such as ajrak.

A steatite bust known as the "Priest-King", excavated at Mohenjo-daro and currently in the National Museum of Pakistan, shows one shoulder draped in a piece of cloth that resembles an ajrak. Of special note is the trefoil pattern etched on the person's garment interspersed with small circles, the interiors of which were filled with a red pigment

Ajrak is a distinctive Sindhi block-printed cloth. The cloth is printed using carved wooden blocks and resist-dye techniques passed down through generations. Typical ajrak colour schemes centre on deep indigo and crimson with white and black used to define geometric motifs. Ajrak is usually sold as long unstitched cloth for draping as shawls, dupattas or wraps varying in length and size.

Ajrak production is concentrated in many parts of Sindh, including Matiari, Hala, Bhit Shah, Moro, Sukkur, Kandiaro, Hyderabad, and many cities of Upper Sindh and Lower Sindh. The cloth is widely used in Sindhi public and cultural life and is presented as a gesture of hospitality and respect.

Ajrak is commonly presented to guests and used at weddings and cultural events as a symbol of respect. The cloth is also a visible marker of Sindhi identity and appears in exhibitions and media about Sindhi textiles. In 2025, the Government of Sindh introduced new vehicle registration plates featuring an ajrak-inspired design to highlight Sindh's cultural heritage and promote regional identity.