- Jack, Michael (Mr) 7889
- Jacks, William (Mr) 45
- Jackson, Francis (Mr) 59
- Jackson, Frank (Mr) 9
- Jackson, George (Mr) 232
- Jackson, Glenda (Ms) 5647
- Jackson, Helen (Mrs) 1582
- Jackson, Henry (Mr) 99
- Jackson, Henry (Sir) 140
- Jackson, John (Sir) 9
- Jackson, Joseph (Mr) 180
- Jackson, Margaret (Miss) 11692
- Jackson, Peter (Mr) 462
- Jackson, Ralph (Mr) 4
- Jackson, Richard (Mr) 7
- Jackson, Robert (Mr) 1096
- Jackson, Robert (Mr) 11
- Jackson, William (Mr) 3885
- Jackson, William (Mr) 205
- Jackson, William (Sir) 81
- Jacob, Albert (Mr) 36
- Jacobsen, Thomas (Mr) 63
- Jacoby, James (Sir) 74
- Jagger, John (Mr) 343
- James, Archibald (Wing Commander) 499
- James, Charles (Mr) 20
- James, Cuthbert (Lieut-Colonel Hon.) 416
- James, David (Mr) 455
- James, Edward (Mr) 8
- James, Edwin (Mr) 248
- James, Henry (Mr) 2821
- James, Walter (Hon.) 256
- James, Walter (Sir) 13
- James, William (Admiral Sir) 32
- James, William (Mr) 21
- Jameson, John (Captain) 80
- Jameson, John (Mr) 208
- Jamieson, David (Mr) 8586
- Jamieson, Douglas (Mr) 142
- Janman, Tim (Mr) 577
- Janner, Barnett (Mr) 6190
- Janner, Greville (Mr) 6652
- Jardine, Ernest (Mr) 75
- Jardine, John (Sir) 645
- Jarrett, George (Mr) 32
- Jarvis, Alexander (Mr) 8
- Jarvis, John (Colonel Sir) 62
- Jay, Douglas (Mr) 11794
- Jebb, Richard (Professor) 49
- Jeffreys, Arthur (Mr) 574
- Jeffreys, George (General Sir) 1100
- Jeger, George (Mr) 2122
- Jeger, Lena (Mrs) 1589
- Jeger, Santo (Dr) 94
- Jellett, William (Mr) 45
- Jenkin, Bernard (Hon.) 4573
- Jenkin, Patrick (Mr) 10156
- Jenkins, Arthur (Mr) 553
- Jenkins, Brian (Mr) 911
- Jenkins, David (Mr) 116
- Jenkins, Edward (Mr) 522
- Jenkins, Hugh (Mr) 3561
- Jenkins, John (Mr) 108
- Jenkins, John (Sir) 18
- Jenkins, Richard (Mr) 9
- Jenkins, Robert (Mr) 190
- Jenkins, Roy (Mr) 8252
- Jenkins, William (Sir) 540
- Jenkinson, George (Sir) 278
- Jennings, John (Mr) 615
- Jennings, Louis (Mr) 103
- Jennings, Roland (Mr) 639
- Jephcott, Alfred (Mr) 19
- Jephson, Charles (Mr) 15
- Jermyn, (Earl) 9
- Jermyn, (Earl) 4
- Jerningham, Hubert (Mr) 16
- Jervis, John (Sir) 153
- Jervoise, Jervoise (Sir) 81
- Jessel, George (Sir) 50
- Jessel, Herbert (Colonel Sir) 349
- Jessel, Toby (Mr) 2542
- Jesson, Charles (Mr) 185
- Jesson, Thomas (Major) 42
- Jewson, Dorothy () 23
- Jewson, Percy (Mr) 91
- Jocelyn, (Viscount) 79
- Jodrell, Neville (Sir) 36
- Joel, Dudley (Mr) 374
- John, Brynmor (Mr) 5130
- John, Edward (Mr) 74
- John, William (Mr) 389
- Johns, Jasper (Mr) 14
- Johnson, Alan (Mr) 3496
- Johnson, Boris (Mr) 296
- Johnson, Carol (Mr) 631
- Johnson, Donald (Dr) 887
- Johnson, Edward (Mr) 2
- Johnson, Eric (Mr) 1250
- Johnson, Howard (Mr) 162
- Johnson, James (Mr) 4876
- Johnson, John (Mr) 1
- Johnson, John (Mr) 2
- Johnson, John (Mr) 33
- Johnson, Melanie (Miss) 5454
- Johnson Smith, Geoffrey (Sir) 2106
- Johnson, Stanley (Sir) 24
- Johnson, Walter (Mr) 521
- Johnson, William (General) 25
- Johnson, William (Mr) 20
- Johnson, William (Mr) 944
- Johnson, William (Sir) 14
- Johnson-Ferguson, Jabez (Mr) 40
- Johnston, Alexander (Mr) 2
- Johnston, Andrew (Mr) 52
- Johnston, Andrew (Mr) 37
- Johnston, Christopher (Mr) 13
- Johnston, Douglas (Mr) 217
- Johnston, James (Mr) 16
- Johnston, Russell (Mr) 4052
- Johnston, Thomas (Mr) 4735
- Johnston, William (Mr) 1334
- Johnstone, Harcourt (Mr) 543
- Johnstone, Harcourt (Sir) 104
- Johnstone, John (Mr) 263
- Johnstone, John (Mr) 3
- Johnstone, John (Sir) 9
- Johnstone, Joseph (Mr) 139
- Joicey, James (Sir) 317
- Joicey-Cecil, John (Lord) 19
- Jolliffe, Hylton (Mr) 2
- Jolliffe, William (Sir) 328
- Jones, Alec (Mr) 2922
- Jones, Arthur (Mr) 869
- Jones, Arthur (Mr) 910
- Jones, Aubrey (Mr) 1641
- Jones, Barry (Mr) 9169
- Jones, Daniel (Mr) 1039
- Jones, David (Mr) 3
- Jones, David (Mr) 1437
- Jones, David (Sir) 223
- Jones, Edgar (Mr) 467
- Jones, Elwyn (Sir) 2930
- Jones, Evan (Mr) 5
- Jones, Evan (Sir) 45
- Jones, Fiona (Mrs) 56
- Jones, George (Sir) 253
- Jones, Gwilym (Mr) 5021
- Jones, Gwynoro (Mr) 816
- Jones, Helen (Ms) 1398
- Jones, Henry (Sir) 410
- Jones, Ieuan Wyn (Mr) 2424
- Jones, James (Mr) 211
- Jones, Jenny (Ms) 133
- Jones, John (Mr) 1239
- Jones, John (Mr) 6
- Jones, John (Mr) 2019
- Jones, John (Mr) 18
- Jones, Jon Owen (Mr) 934
- Jones, Kevan (Mr) 407
- Jones, Leifchild (Mr) 1801
- Jones, Lewis (Sir) 243
- Jones, Lynne (Dr) 3268
- Jones, Martyn (Mr) 2360
- Jones, Morgan (Mr) 3167
- Jones, Nigel (Mr) 1275
- Jones, Robert (Mr) 2334
- Jones, Robert (Mr) 11
- Jones, Theobald (Mr) 29
- Jones, Thomas (Mr) 280
- Jones, William (Mr) 1
- Jones, William (Mr) 137
- Jones, William (Sir) 34
- Jones, Willoughby (Sir) 1
- Jones-Parry, Thomas (Mr) 12
- Jopling, Michael (Mr) 4710
- Jordan, Jeremiah (Mr) 375
- Joseph, Keith (Sir) 13592
- Jowell, Tessa (Ms) 4306
- Jowett, Frederick (Mr) 1105
- Jowitt, William (Sir) 1173
- Joyce, Eric (Mr) 229
- Joyce, Michael (Mr) 820
- Joynson-Hicks, Lancelot (Hon.) 1875
- Joynson-Hicks, William (Mr) 10230
- Judd, Frank (Mr) 4259
9,582 people in total