| Lady Place | | Demesne in the parish of Hurley |
| Lambourn | | Parish and market town in the hundred of Lambourn |
| Lambourn | | One of the 20 hundreds of Berkshire, containing the parishes of East Garston and Lambourn |
| Lambourn Woodlands | | Village in the parish of Lambourn |
| Lambourn, Upper | | Tything in the parish of Lambourn |
| Langford | | Parish partly in the hundred of Farringdon, Berks, and partly in that of Bampton, Oxfordshire |
| Langley Common | | Village in the parish of Barkham |
| Leckhampstead | | Chapelry in the parish of Chieveley |
| Leonard's Hill, St. | | Seat in the parish of Clewer |
| Letcombe Bassett | | Parish in the hundred of Kintbury Eagle |
| Letcombe Regis | | Parish in the hundred of Kintbury Eagle |
| Letcombe, Upper | | Alternative name for Letcombe Bassett, a parish in the hundred of Kintbury Eagle |
| Leverton | | Tything in the parish of Chilton Foliatt |
| Lilley | ? | Tything in the parish of Catmore |
| Lilly | ? | Tything in the parish of Catmore |
| Little Coxwell | | Township and chapelry in the parish of Faringdon |
| Little Heath | | Part of Tilehurst |
| Little Hendred | | Alternative name for West Hendred, a parish in the hundred of Wantage |
| Little London | | Hamlet in the parish of Sunningwell (there is also a separate Little London near Pamber, Hants, which is not in Berks) |
| Little Newbury | | Hamlet in the parish of Faringdon |
| Little Sandhurst | | Part of Sandhurst |
| Little Shefford | | Alternative name for East Shefford, a parish in the hundred of Kintbury Eagle |
| Little Wittenham | | Parish in the hundred of Ock |
| Littlewick Green | | Parish created from White Waltham in 1894 |
| Littleworth | | Hamlet and ecclesiastical district in the parish of Faringdon. Together with Thrupp and Wadley, once formed a separate parish. |
| Lockinge, East | | see East Lockinge, a parish in the hundred of Wantage |
| Lockinge, West | | see West Lockinge, a hamlet in the parish of Wantage |
| Long Wittenham | | Parish in the hundred of Ock |
| Longcot | | Township and chapelry in the parish of Shrivenham |
| Longworth | | Parish in the hundreds of Ganfield and Ock |
| Lower Basildon | | Thameside part of Basildon |
| Lower Green | | Part of Inkpen |
| Lower Padworth | | Hamlet on the A4 (Bath Rd) falling within three parishes: Beenham, Aldermaston and Padworth) |
| Lyford | | Chapelry in the parish of West Hanney |
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