The Best Dive Knife Helps You Prepare for any Underwater Situation

This 4-inch-long dive knife from EZ-Lock is available in Tanto and stiletto styles. Constructed from titanium, the knife sits comfortably in a locking sheath that ensures you won’t lose your knife during your dive. Equipped with serrations and a straight edge this knife is versatile and easy to use.

EZ-Lock’s dive knife provides multiple uses but is a tad simplistic in design. The plastic sheath will likely deteriorate before the knife does. However, this knife is covered by a 24-month warranty through Leisure Pro. The knife has a 4.5 out of 5-star customer rating on Leisure Pro.

Characterized by the popular Tanto tip, this 3-inch blade from Aqua Lung includes a locking sheath. The blade itself is titanium and fits snugly in its sheath, which you can mount in a variety of locations.

Some divers might prefer sheaths that are not locking, but they can come in handy. The ability to mount this dive knife anywhere makes it a great choice if you prefer the knife to be in a unique spot where a traditional sheath may not suffice. Customers interested in this dive knife can expect to spend a little cash. A 2-year warranty protects this knife. Leisure Pro customers have given it a rating of 4.6 out of 5-stars.

Measuring 2.8-inches in length, this dive knife from TUSA is made from 304-grade stainless steel. Customers who purchase this knife will also receive a plastic, corrosion-proof locking sheath. Knives are offered in multiple color schemes.

Plastic sheaths should be upgraded to more durable materials whenever possible. You can find it for sale on Leisure Pro’s website, where they advertise a 1-year warranty on this particular product. Leisure Pro’s customers have rated it 4.7 out of 5-stars.

This all-black, stainless steel blade features a serrated edge and line cutter. Measuring 6-inches in length the blade includes built-in shears in an innovative, patented design. A quick-release locking sheath completes this package.

While the shine of stainless steel and titanium blades can scare away wildlife, dark blades can be difficult to find in the depths of deep waters. However, this capable blade wins style points. Dive Right in Scuba customers have rated the knife a little over 4.0 out of 5-stars.

Underwater Kinetics’ nearly 3-inch-long blade comes from metal alloys that mimic the strength and added corrosion resistance of high-grade stainless steel. The dive knife features a serrated edge and a blunt tip. The same material comprises the accompanying sheath and knife’s grip.

Some divers might prefer larger knives, while others seek out small knives like this for specific uses. Leisure Pro’s customers have rated the dive knife 4.5 out of 5.0 stars.

Offered in a variety of colors, including glow in the dark, this dive knife from EEZYCUT contains the efforts of American workers’ hands. The knife itself measures about 3-inches in length, but it does not resemble your typical knife. Rather, it is a sheathed, double-sided razor blade made from 440A stainless steel.

Though this innovatively-designed knife still accomplishes the same cutting tasks as a typical dive knife, some might prefer a traditional form. Leisure Pro’s customers have rated it 4.8 out of 5-stars.

With a 3-inch long blade comprised of stainless steel, this knife from United Cutlery is accompanied by a standard sheath. This blade has a blunt tip and a rubber handle.

There are many other knives on this list, let alone available online, which are better investments. Amazon customers have rated it 3.5 out of 5-stars.

Available in black and yellow, this titanium knife with Tanto tip measures 4.5-inches in length. The knife features a line cutter and serrated edge for a variety of uses. The patented sheath that accompanies this knife is lockable but springs free quite easily.

For those who like to attach their knives with a line, the handle on this knife is perfect. It features a dedicated hole for looping paracord — or any cord for that matter — through. The knife has a 24-month warranty, and Leisure Pro customers have rated it 4.7 out of 5-stars.

Complete with a serrated edge, line cutter, and locking lanyard, this red-handled dive knife has a 3.5-inch-long titanium blade. Because it is a folding knife, like many pocket knives, it doesn’t come with a separate sheath.

Some divers might not like this specific design, especially if they are wearing gloves, as the blade itself might prove difficult to extend. The red handle does make it stand out. The knife has a 12-month limited warranty. Leisure Pro customers have rated the knife 4.5 out of 5-stars.