With the emergence of the flat design trend leading the way for the past year, thin line icon sets have been increasingly popular. We all love icons, especially those well designed, clean and minimalistic icon sets that seem to work just right in our layout. So it’s a good idea to have a good collection of icons at your disposal.

I have carefully hand-picked this collection of 10 fantastic, super high quality, free flat design icon packs. I hope you will find something that comes in handy for your next project. Enjoy.

1. 48 Icons by Robin Kylander

10 fantastic free thin line icon sets

2. OtherCircles Thin Line Icon Set

10 fantastic free thin line icon sets

3. Free Budicon Icons

10 fantastic free thin line icon sets

4. 79 Animal Line Icons

10 fantastic free thin line icon sets

5. Social Media Line Icons

10 fantastic free thin line icon sets

6. 36 Line Icons by Ava

10 fantastic free thin line icon sets

7. 20 Thin Line Icons

10 fantastic free thin line icon sets

8. 56 Thin Stroke Icons

10 fantastic free thin line icon sets

9. Feather Icon Set

10 fantastic free thin line icon sets

10. Simple Line Icons

10 fantastic free thin line icon sets

Hope you enjoyed this roundup of great free thin line icon sets. What icon set did you find most useful from this list? Let me know in the comments section below.