Surgeon's knot
Also called Surgeon knot
A surgeon’s knot is a quick line-to-line knot used to join leader and tippet, or to build a dropper tag for a second fly.
- Group
- Line-to-line knots
- Category
- Knots & rigging
- Level
- Beginner
- Water
- Fresh & salt
Last updated
What Surgeon's knot means
Fast knots matter when you are changing tippet in wind, cold, or low light. The surgeon’s knot is a simple way to connect two pieces of mono or fluorocarbon without needing perfectly matched diameters.
To tie it, overlap the two lines, form a loop with both lines together, then pass the end of the leader and the whole tippet through the loop twice and snug it down. Many anglers wet the knot before tightening, then trim the tags. Leaving one tag end long creates a tag you can tie a dropper fly to.
Why it matters on the water
This knot gives a clean, reliable connection with minimal fuss, so changing tippet stops feeling like a production. That means more time with a fly in the water and fewer “good enough” knots tied in a hurry.
Understanding the surgeon’s knot also helps with rigging choices. If you want a two-fly setup, you can build a dropper tag right into the connection instead of adding extra hardware, which keeps the leader layout simple and easier to untangle.
Read next
- Blood knotA blood knot is a line-to-line knot used to join two pieces of similar-diameter mono or fluorocarbon, most often leader to tippet.
- Double surgeon's knotA double surgeon’s knot is a quick line-to-line knot for joining two pieces of leader or tippet. It uses two wraps through an overhand loop to add grip and strength.
- LeaderThe leader is the clear, tapered line between the fly line and the fly. It turns the fly over and gives you a clean, controlled presentation.
- TippetTippet is the thin, level line tied to the end of your leader. It’s the section you cut back and replace as you change flies and re-tie knots.