Square and rectangular jar labels from LabelsOnline.com are sized to fit the flat sides of square and rectangular glass and plastic jars — the most common format for jams, jellies, honey, sauces, spice blends, body scrubs, bath salts, and specialty pantry items. Unlike round labels on cylindrical jars, square and rectangular jar labels sit flush on the flat face of the container without curling or bridging at the edges, giving you a crisp, professional presentation on every unit.

Available in materials including standard white matte, premium high gloss, premium photo gloss (inkjet), brown kraft for an artisan aesthetic, gold foil and silver foil for premium positioning, and crystal clear for a no-label look on clear glass jars. All labels are laser or inkjet compatible and formatted for 8.5" x 11" sheets. US-made and backed by our 100% satisfaction guarantee.

Frequently Asked Questions

What label sizes fit common square jars?

For a 4 oz square glass jar, a 2.5" x 2.5" or 3" x 3" label fits the face cleanly. For an 8 oz wide-mouth square jar, a 3.5" x 3.5" or 4" x 3" label works well. For larger 16 oz square jars, a 4" x 4" or 4" x 3.5" label gives full coverage. Browse the size options in this collection to find the right match for your specific container dimensions.

Browse the full square/rectangular jar label selection below.