| Term | Entry | Related |
| Label | Label | - |
| Label | File | See Label |
| Label | Label | See Distinction of Houses |
| Labent | Labent | See Gliding |
| Laced | Laced | - |
| Lacs d'amour | Lacs d'amour | - |
| Lady | Lady | - |
| Lady | Lady | - |
| La-fleur-du Maistre | La-fleur-du Maistre | See Marygold |
| Lama | Lama | - |
| Lamb | Lamb | - |
| Lambbeaux Cantoned | Cantoned-Lambeaux | - |
| Lambeaux | Label | See Distinction of Houses |
| Lambeaux | Lambeaux | See Label |
| Lambeaux per long | Lambeaux per long | - |
| Lambeauxed | Lambeauxed | - |
| Lambel | Lambel | See Label |
| Lambent | Lambent | See Gliding |
| Lamb-holy | Lamb-holy | - |
| Lambrequin | Lambrequin | - |
| Lambrequin | Lambrequin | - |
| Lambrequin | Mantling | - |
| Lamequin | Lambrequin | - |
| Laminated | Laminated | - |
| Lampagoe | Lampagoe | See Limpago |
| Lampargoe | Lampagoe | See Limpago |
| Lampargoe | Lampargoe | See Limpago |
| Lampasse | Lampasse | - |
| Lampreys | Lampreys | - |
| Lancaster Rose | Lancaster Rose | - |
| Lance | Lance | - |
| Lancet | Lancet | - |
| Landscapes | Landscapes | - |
| Landskips | Landscapes | - |
| Land-tortoise | Land-tortoise | See Tortoise |
| Langued | Langued | - |
| Lantern | Lantern | - |
| Lapped | Lapped | - |
| Lapwing | Lapwing | - |
| La-quise | La-quise | See A-la-Quise |
| Lark | Lark | - |
| Larmes | Larmes | See Guttée |
| Larmettes | Larmes | See Guttée |
| Lash | Lash | See Scourge |
| Lattice | Lattice | - |
| Launce | Launce | - |
| Laurel | Laurel | - |
| Lavender | Lavender | - |
| Laver-cutter | Layer | See Coulter |
| Layer | Layer | See Coulter |
| Layer | Layer | - |
| Le Bourlet | Le Bourlet | - |
| Le tout de tout | Le tout de tout | - |
| leading staff | Trailing-Pike | - |
| Lead-line | Lead-line | - |
| Leaf | Leaf | See Leaves |
| Leaping | Leaping | - |
| Leash | Leash | - |
| Leash | Leash | - |
| Leashed | Leashed | - |
| Leaved | Leaved | - |
| Leaves | Leaves | - |
| Legged | Legged | See Bird |
| Legs | Legs | . Animals legs are termed Gambs |
| Leish | Leish | See Leash |
| Lentally | Lentally | - |
| Leonced | Leonced | See Decorated |
| Leopard | Leopard | - |
| Leopardé | Leopardy | - |
| Leopardy | Leopardy | - |
| Letters | Letters | - |
| Leure | Leure | See Lure |
| Leure | Lure | - |
| Levant | Levant | - |
| Level | Level | - |
| Lever | Lever | - |
| Leveret | Leveret | - |
| Levyd | Levyd | - |
| Lewre | Lewre | See Lure |
| Lezard | Lezard | See Lizard |
| Lezard | Lezard | - |
| Libarde | Libarde | - |
| Libbarde | Libarde | - |
| Lictor's-rod | Lictor's-rod | See Fasces |
| Lie | Lie | - |
| Lighter | Lighter | - |
| Lily of the Flag | Lily of the Flag | - |
| Lily of the Garden | Lily of the Garden | - |
| Limb of a Tree | Limb of a Tree | - |
| Limbeck | Limbeck | - |
| Limbeck | Alembic | - |
| Limpago | Limpago | - |
| Linden | Linden | - |
| Lined | Lined | - |
| Lined | Lined | - |
| Lines of Partition | Lines of Partition | - |
| Ling | Ling | - |
| Lingued | Lingued | See Langued |
| Linime of a Tree | Linime of a Tree | See Limb of a Tree |
| Link | Link | - |
| Linked | Linked | - |
| Linnet | Linnet | - |
| Lion | Lion | See Languid |
| Lion of England | Lion of England | - |
| Lionceau | Lioncel | - |
| Lionced | Lionced | - |
| Lioncel | Lioncel | - |
| Lioncel | Lyon | - |
| Lionelor | Lioncel | - |
| Lionne | Lionne | - |
| Lion's-Gambe | Lion's-Gambe | - |
| Lire | Lyre | - |
| Lis | Lys | - |
| Lis | Lis | - |
| Lisere | Lizare | - |
| Liston | Liston | - |
| Lists | Lists | - |
| Litre | Litre | - |
| Litvit's Skin | Litvit's Skin | - |
| Livery-colours | Livery-colours | - |
| Lizard | Lezard | - |
| Lizard | Eft | - |
| Lizare | Lizare | - |
| Loach | Loach | - |
| Lobster | Lobster | - |
| Loch | Loch | - |
| Lochabar | Axe | - |
| Lodged | Lodged | - |
| Log-line | Log-line | - |
| Lolling | Lolling | - |
| Long Cross | Long Cross | - |
| Long cross pommelled the foot potent | Long cross, potent pommelled of three | - |
| Long Cross raguled | Long Cross raguled | - |
| Long Cross Raguly and trunked | Long Cross raguled | - |
| Long Cross, couped, with the felloe of a wheel conjoined at the top | Long Cross, couped, with the felloe of a wheel conjoined at the top | - |
| Long Cross, on a globe, or ball, the top like a Roman P | Long Cross, on a globe, or ball, the top like a Roman P | - |
| Long cross, potent pommelled of three | Long cross, potent pommelled of three | - |
| Long-bow | Long-bow | See Bow |
| Long-per | Long-per | - |
| Looking back | Looking back | - |
| Loop-holes | Loop-holes | - |
| Looring-tonges | Looring-tonges | See Closing-tongs |
| Lopped | Lopped | - |
| Lord | Lord | - |
| Lou | Loup | - |
| Loup | Loup | - |
| Loup-cervier | Loup-cervier | - |
| Loupe | Loup | - |
| Lowered | Lowered | - |
| Lozenge | Lozenge | - |
| Lozengee | Lozengee | - |
| Lozenge-Grand | Lozenge-Grand | - |
| Lozengeways | Lozengeways | - |
| Lozengie | Lozengie | - |
| Lozengy | Lozengee | - |
| Lozengy-Barry | Lozengy-Barry | See Barry Indented |
| Lozengy-Masculy | Lozengy-Masculy | - |
| Luce | Pike | - |
| Luce | Luce | - |
| Lucerne | Lucerne | - |
| Lucy | Luce | - |
| Lumieres | Lumieres | - |
| Lumphad | Lumphad | See Lymphad |
| L'un en l'autre | L'un en l'autre | - |
| L'un sur l'autre | L'un sur l'autre | - |
| Luna | Luna | - |
| Lunel | Lunel | - |
| Lupar | Lupar | - |
| Lure | Lure | - |
| Lure, In | Lure, In | - |
| Lute | Lute | - |
| Lutra | Lutra | See Otter |
| Lybbard | Lybbard | See Leopard |
| Lylye | Lylye | - |
| Lymphad | Lymphad | - |
| Lynx | Lynx | - |
| Lyon | Lyon | - |
| Lyon, King of Arms | Lyon, King of Arms | - |
| Lyoncel | Lyon | - |
| Lyra | Lyre | - |
| Lyre | Lyre | - |
| Lys | Lys | - |
