| < | Less than sign | U+003C | 60 |
| ≤ | Less than or equal to Symbol | U+2264 | 8804 |
| ≶ | Less than or greater than Symbol | U+2276 | 8822 |
| ≮ | Not less than Symbol | U+226E | 8814 |
| ⋘ | Very much less than | U+22D8 | 8920 |
| ⪙ | Double-line equal to or less than | U+2A99 | 10905 |
| ≦ | Less than over equal to Symbol | U+2266 | 8806 |
| ≲ | less than or equivalent to | U+2272 | 8818 |
| ≪ | Much less than | U+226A | 8810 |
| ＜ | Fullwidth less than sign | U+FF1C | 65308 |
| ⋜ | Equal to or less than | U+22DC | 8924 |
| ⍃ | Apl functional symbol quad less than | U+2343 | 9027 |
| ⧀ | Circled less than | U+29C0 | 10688 |
| ⪡ | Double nested less than | U+2AA1 | 10913 |
| ⫹ | Double-line slanted less than or equal to | U+2AF9 | 11001 |
| ⪣ | Double nested less than with underbar | U+2AA3 | 10915 |
| ⦖ | Double right arc less than bracket | U+2996 | 10646 |
| ⪛ | Double-line slanted equal to or less than | U+2A9B | 10907 |
| ⦓ | Left arc less than bracket | U+2993 | 10643 |
| ⥷ | Leftwards arrow through less than | U+2977 | 10615 |
| ⪋ | less than above double-line equal above greater than | U+2A8B | 10891 |
| ⪑ | less than above greater than above double-line equal | U+2A91 | 10897 |
| ⥶ | less than above leftwards arrow | U+2976 | 10614 |
| ⪏ | less than above similar above greater than | U+2A8F | 10895 |
| ⪍ | less than above similar or equal | U+2A8D | 10893 |
| ⪓ | less than above slanted equal above greater than above slanted equal | U+2A93 | 10899 |
| ⪉ | less than and not approximate | U+2A89 | 10889 |
| ⪇ | less than and single-line not equal to | U+2A87 | 10887 |
| ≨ | less than but not equal to | U+2268 | 8808 |
| ⋦ | less than but not equivalent to | U+22E6 | 8934 |
| ⪦ | less than closed by curve | U+2AA6 | 10918 |
| ⪨ | less than closed by curve above slanted equal | U+2AA8 | 10920 |
| ⋚ | less than equal to or greater than | U+22DA | 8922 |
| ⪅ | less than or approximate | U+2A85 | 10885 |
| ⩽ | less than or slanted equal to | U+2A7D | 10877 |
| ⪁ | less than or slanted equal to with dot above | U+2A81 | 10881 |
| ⪃ | less than or slanted equal to with dot above right | U+2A83 | 10883 |
| ⩿ | less than or slanted equal to with dot inside | U+2A7F | 10879 |
| ⩹ | less than with circle inside | U+2A79 | 10873 |
| ⋖ | less than with dot | U+22D6 | 8918 |
| ⩻ | less than with question mark above | U+2A7B | 10875 |
| ≰ | Neither less than nor equal to | U+2270 | 8816 |
| ≴ | Neither less than nor equivalent to | U+2274 | 8820 |
| ≸ | Neither less than nor greater than | U+2278 | 8824 |
| ⪟ | Similar above less than above equals sign | U+2A9F | 10911 |
| ⪝ | Similar or less than | U+2A9D | 10909 |
| ⪕ | Slanted equal to or less than | U+2A95 | 10901 |
| ⪗ | Slanted equal to or less than with dot inside | U+2A97 | 10903 |
| ﹤ | Small less than sign | U+FE64 | 65124 |
| ⫷ | Triple nested less than | U+2AF7 | 10999 |