| Icon | Name | Unicode |
|---|---|---|
| < | Sign less than | U+003C |
| ≤ | Less-Than or Equal To | U+2264 |
| ≪ | Much Less-Than | U+226A |
| ⪇ | Less than higher, double line, equal, higher, greater than | U+2A87 |
| ≲ | Less than or equivalent to | U+2272 |
| ⩽ | Less than or equal to the point inside | U+2A7D |
| ⪅ | Less than with point | U+2A85 |
| ⩻ | Less than is not equal to | U+2A7B |
| ⋦ | Less than with a circle inside | U+22E6 |
| ⪉ | Less than with a question mark above | U+2A89 |
| ⩹ | Less than and single-line, not equal to | U+2A79 |
| ⩿ | Less than with double line equal to above | U+2A7F |
| ≶ | Less than overlap, more than | U+2276 |
| ⋜ | Less than with a plus sign below | U+22DC |
| ⥡ | Less than with a tilde above | U+2961 |
| ⪋ | Less than with oblique equal above | U+2A8B |
| ⊲ | Normal Subgroup | U+22B2 |
| ⊴ | Ordinary subgroup equal to or equal to | U+22B4 |
| ⪁ | Less than higher, similar or equal | U+2A81 |
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