Northamptonshire on Wikipedia.

Achurch, St. John the Baptist. © Robin Peel.
Apethorpe, St. Leonard. Mildmay monument. Both © Robin Peel. Link.
Arthingworth, St. Andrew. © Aidan Thomson.
Ashby St. Ledger, St. Mary and St. Leodegarius. © Aidan Thomson.
Ashley, St. Mary the Virgin.  © Pamela Weston.
Aston le Walls, dedicated to St. Leonard. The tower. Both © Steve Bulman. 151 SP 495 508.
Aynho, dedicated to St. Michael. The tower is 15th century, but the main body of the church dates from the 1720's. Both © Steve Bulman. 151 SP 514 332.

Badby, St. Mary. © Aidan Thomson.
Barby, St. Mary. © Aidan Thomson.
Barton Seagrave, St. Botolph. © Steve Nurthen and Andy Jones.
Blisworth, St. John the Baptist. SP 725 534. © Michael Bourne.
Braunston, dedicated to All Saints. © Aidan Thomson.
Braybrooke, dedicated to All Saints. © Aidan Thomson.
Brixworth, All Saints, was founded in the 7th century, and partly built from Roman bricks. Interior view. A stained glass window. All © Bill McKenzie. Link1. Link2. Link3.
Brockhall, St. Peter and St. Paul. Interior view. Both © Aidan Thomson.
Bugbrooke, St. Michael and All Angels. SP 674 573. © Michael Bourne.
Byfield, Holy Cross. © Aidan Thomson.

Charwelton, Holy Trinity. From an old postcard in Reg Dosell's Collection. Link.
Chipping Warden, dedicated to Sts. Peter and Paul. The tower. Both © Steve Bulman. 151 SP 499 479.
Church Brampton, St. Botolph. © Aidan Thomson.
Claycoton, St. Andrew (disused). © Aidan Thomson.
Cold Ashby, St. Denys. © Aidan Thomson.
Collyweston, St. Andrew. © Graeme Harvey.
Cosgrove, St. Peter and St. Paul. © Les Needham.
Cotterstock, St. Andrew. Another view. Both © Robin Peel.
Cottingham, St. Mary Magdalene. Methodist Church. Both © George Weston.
Courteenhall, St. Peter and St. Paul. SP 764 529. © Michael Bourne.
Cranford, St. Andrew. From an old postcard, Bulman Collection. Link.
Crick, St. Margaret. © Aidan Thomson.
Croughton, dedicated to All Saints. © Steve Bulman. 152 SP 546 336.

East Haddon, St. Mary. © Aidan Thomson.
Edgcote, dedicated to St. James. The tower. Both © Steve Bulman. 151 SP 505 479.
Elton, All Saints. Wesleyan Chapel - stone says "Re-erected in 1864". Both © Robin Peel.
Evenley. Dedicated to St. George. © Steve Bulman. 152 SP 585 352.
Eydon, St. Nicholas. Previously in the "Unknown" section, thanks to Janet Gimber for identifying this church. From an old postcard, Bulman Collection. Link.

Farthinghoe, dedicated to St. Michael and All Angels. © Steve Bulman. 152 SP 536 399.
Fawsley, St. Mary. © Aidan Thomson.
Flore, All Saints. © Aidan Thomson.
Fotheringhay, St. Mary & All Saints. © Zoe Martin. A view from an old postcard, Bulman Collection. Previously in the "Unknown" section, this original drawing once belonged to an ancestor of Ken Edwards, and was thought to show a church maybe in the Maghull area (Lancs.), and was probably drawn before 1860. Many thanks indeed to Aidan Thomson, who says the church drawing itself, and the situation on the ground with the river, bears a great similarity to Fotheringhay in Northamptonshire. This makes the mound to the right in the drawing the site of Fotheringhay Castle. Further work by Janet Gimber means that this identification is now a certainty. The drawing is now thought to be about 180 years old.
Furtho, St. Bartholomew. The church of a vanished village. SP 774 431. © Les Needham.

Gayton, St. Mary the Virgin. SP 706 547. © Michael Bourne.
Geddington, St. Mary Magdalene. U.R.C. Both © Bill McKenzie.
Great Brington, St. Mary. From an old postcard, Bulman Collection.
Guilsborough, St. Etheldreda. © Aidan Thomson.

Harlestone, St. Mary. Another view © Jane Marriott.
Haselbeach, St. Michael. © Aidan Thomson.
Hellidon, St. John Baptist. © Aidan Thomson.
Higham Ferrers, St. Mary the Virgin. © George Weston.
Hinton-in-the-Hedges, dedicated to the Holy Trinity. Another view. © Steve Bulman. 152 SP 559 370.
Holcot, St. Mary and All Saints. Interior view. Both © Jill Coulthard.

Isham, St. Peter. © Aidan Thomson. Link.

Kelmarsh, St. Dionysius. © Aidan Thomson.
Kettering.
Kilsby, St. Faith. © Aidan Thomson.
King's Cliffe, All Saints and St. James. © Robin Peel.
King's Sutton, dedicated to Saints Peter and Paul. A most imposing building with a splendid spire. © Steve Bulman. 151 SP 498 361.
Kislingbury, St. Luke. SP 697 596. © Michael Bourne.

Lamport, All Saints. © George Weston.
Lilbourne, dedicated to All Saints. © Aidan Thomson.
Loddington, St. Leonard. © Steve Nurthen and Andy Jones.
Luddington in the Brook, St. Margaret. A splendid animal!! Both © Robin Peel. Link.
Lutton, St. Peter. Previously in the "Unknown" section, thanks to Nigel Brooks for identifying this as the Northamptonshire Lutton. From an old postcard, Bulman Collection. A modern view. © Robin Peel.

Marston St. Lawrence, St. Lawrence. Interior view. Both © Aidan Thomson.
Marston Trussell, St. Nicholas. © Aidan Thomson.
Middleton Cheney. Dedicated to All Saints. The spire. A fine door. © Steve Bulman. 151 SP 499 421.

Naseby, dedicated to All Saints. © Aidan Thomson. Methodist Chapel. SP 688 779. © George Weston. Link.
Nassington, St. Mary the Virgin & All Saints. From an old postcard, Bulman Collection. A modern view. © Robin Peel. Link.
Nether Heyford, St. Peter and St. Paul. SP 659 587. The former Primitive Methodist Church. SP 659 586. Both © Michael Bourne.
Northampton.
Norton, All Saints. © Aidan Thomson.

Orton, All Saints. Now redundant, the church houses a school for the training of stonemasons. SD 495 107. © Chalmers Cursley. Link.
Oundle.

Paulerspury, St. James the Great. © Jane Marriott. U.R.C. SP 723 455. © Les Needham.
Pilton, All Saints. © Robin Peel.
Potterspury, St. Nicholas. SP 762 433. © Les Needham. Link.
Preston Capes, SS Peter and Paul. © Aidan Thomson.

Quinton, St. John. SP 776 543. © Michael Bourne.

Rockingham, St. Leonard. © Bill McKenzie.
Rothersthorpe, St. Peter and St. Paul. SP 714 566. © Michael Bourne.
Rushden, St. Mary. From an old postcard, Bulman Collection.

Sibbertoft, St. Helen. © Aidan Thomson.
Stanford on Avon, St. Nicholas. © Aidan Thomson.
Stanion, St. Peter the Apostle. Methodist Church. Both © Graeme Harvey.
Staverton, St. Mary the Virgin. © Aidan Thomson.
Stoke Doyle, St. Rumbald. © Robin Peel.
Sulgrave, St. James the Less. From an old postcard, Bulman Collection. The wording reads "The Washington Family attended service here".
Sutton Bassett, All Saints. © George Weston.

Tansor, St. Mary. © Robin Peel. Link.
Thornby, St. Helen. © Aidan Thomson.
Thorpe Malsor, All Saints. © Steve Nurthen and Andy Jones.

Upton, St. John the Baptist. © Robin Peel.

Wakerley, St. John the Baptist, in the care of the Churches Conservation Trust, though still used for occasional services. The font. SP 956 992. Both © Janice Tostevin. Link.
Warmington, St. Mary the Virgin. © Robin Peel. Link1. Link2.
Watford, Saints Peter and Paul. © Aidan Thomson.
Weekley, St. Mary the Virgin. © Bill McKenzie.
Welford, St. Mary the Virgin. © Aidan Thomson. Another view, from an old potcard franked 1917, from the collection of Mrs. Marion Allen. Link.
Wellingborough, St. Barnabus. From an old postcard (franked 1910), Bulman Collection.
Welton, St. Martin. © Aidan Thomson.
West Haddon, dedicated to All Saints. © Aidan Thomson.
Weston by Welland, St. Mary. © Pamela Weston.
Whilton, St. Andrew. © Aidan Thomson.
Winwick, St. Michael. Interior view. Both © Aidan Thomson.
Woodnewton, St. Mary. © Robin Peel. Link.

Yardley Gobion, St. Leonard. SP 765 448. © Les Needham.
Yarwell, St. Mary Magdalene. From an old postcard, Bulman Collection. A modern view. © Robin Peel.
Yelvetoft, dedicated to All Saints. © Aidan Thomson.