Suffolk on Wikipedia.

Acton, All Saints. 155 TL 892 452. © Steve Bulman. Link.
Aldeburgh, St. Peter & St. Paul. 156 TM 465 569. Baptist Church. 156 TM 465 565. Both © Steve Bulman. Catholic Church of Our Lady and St. Peter. © Alan Wilson.
Aldham, St. Mary. Interior view. TM 040 444. Both © Mike Berrell.
Ampton, St. Peter & St. Paul. From an old postcard in Reg Dosell's Collection. Link.

Bacton, St. Mary. From an old postcard in Reg Dosell's Collection.
Barking, St. Mary. 155 TM 076 535. © Steve Bulman. Link.
Barsham, Holy Trinity. From an old postcard, in Geoff Watt's Collection. Link.
Beccles, St. Michael. From an old postcard, Bulman Collection.
Bentley, St. Mary. Interior view. TM 119 382. Link. Baptist Church. TM 112 369. Link. All © Mike Berrell.
Blythburgh, Holy Trinity. Another view, showing porch and tower. 156 TM 450 754. Both © Steve Bulman.
Boxford, St. Mary. 155 TL 963 405. © Steve Bulman. Another view. © Judith Anderson. Link.
Bradfield St. George, St. George. Another view. 155 TL 906 600. © Steve Bulman. Link.
Brent Eleigh, St. Mary. 155 TL 942 482. © Steve Bulman. Link.
Burstall, St. Mary. TM 097 446. © Mike Berrell. Link.
Bury St. Edmunds.

Capel St. Mary, St. Mary the Virgin. © Murray Lynn.
Cavendish, St. Mary. 155 TL 805 465. From an old postcard in Dave Westrap's Collection. Link1. Link2. Link3.
Cavenham, St. Andrew. © Elizabeth Orbell. Link.
Charsfield, St. Peter. From an old postcard, Bulman Collection. Link.
Chattisham, All Saints and St. Margaret. Interior view. TM 092 422. Both © Mike Berrell.
Chelmondiston, Strict Baptist Church, photographed in 1994. According to this website, it's now closed. © Alan Taylor.
Chelsworth, All Saints. 155 TL 980 479. © Steve Bulman. Link.
Clare, St. Peter & St. Paul. From an old postcard, Steve Bulman's Collection. Link.
Cockfield, St. Peter. 155 TL 903 550. © Steve Bulman. Link.
Coddenham, St. Mary. Another view. 156 133 542. Both © Steve Bulman. Link.
Combs, St. Mary. © Chris Emms (2004). Link.
Corton, St. Bartholomew. From an old postcard, Bulman Collection.
Cotton, St. Andrew. © Peter Leggett.
Creeting St. Mary, St. Mary. © Chris Emms (2009). Link.

Debenham, St. Mary. Another view. Both © Jane Marriott.
Dennington, St. Mary the Virgin (interior view). From an old postcard in Christopher Skottowe's Collection. Link1. Link2.
Dunwich, the ruins of Greyfriars (Franciscan). In the background is a church tower, possibly that of All Saints. If so, the photo was taken before the tower fell, a victim of coastal erosion - the date of this depends on the source consulted, but 1919 or 1922. From an old postcard in Christopher Skottowe's Collection.

East Bergholt, St. Mary. In this old postcard (Bulman Collection) the chief object of interest is the bell-cage, to the right. Three modern views of the church, 1, 2, 3. All © Steve Bulman. A modern view of the bell-cage. © Les Needham. TM 068 356.
Elmsett, St. Peter. Interior view. TM 059 472. Link. Methodist Church. Interior view. TM 055 466. All © Mike Berrell.
Elveden, St. Andrew & St. Patrick. From an old postcard (franked 1907), Bulman Collection. An unusual choice of subject, since there is a very large tower just to the right! Link.
Eye, St. Peter & St. Paul. From an old postcard, Bulman Collection. A modern view, the church as seen from the castle, and an interior view showing the splendid rood screen. 144 TM 148 738. Link. The Vine (Baptist) dates from 1868. 144 TM 146 739. Gospel Centre. 144 TM 145 737. All photos © Dave Westrap.

Felixstowe, Trinity Methodist Church. © Chris Emms (2009). St. Peter and St. Paul. From an old postcard in Steve Bulman's Collection. Link.
Felsham, St. Peter. 155 TL 946 570. © Steve Bulman. Link.
Finningham, St. Bartholomew. This was previously in the "Unknown" section, as Elizabeth had bought the picture of a church, believing it to be in West Suffolk, but it proved not to be the church it was advertised as. Thanks are due to Janet Gimber for her marathon efforts - this one wasn't easy, as some of the porch details have changed since the postcard photo was taken. Link.
Framlingham, St. Michael. 156 TM 285 636. © Steve Bulman. Link.
Freckenham, St. Andrew. The porch. TL 665 717. © Peter Wood. Link.

Gazeley, All Saints. From an old postcard in Reg Dosell's Collection. Link.
Great Glemham, All Saints. © Peter Leggett.
Great Green, Congregational Church. 155 TL 914 554. © Steve Bulman.
Grundisburgh, St. John the Baptist. © Chris Emms (2009). Lin1.. Link2.

Hadleigh.
Hengrave, Church of the Reconciliation (R.C.). From an old postcard (franked 1912), Bulman Collection. Link. A fascinating history !!
Higham, St. Stephen. 155 TL 747 657. © Steve Bulman. Link.
Hintlesham, St. Nicholas. Interior view. TM 087 435. Both © Mike Berrell. Link.
Holton St. Mary, St. Mary. Interior view. TM 059 368. Both © Mike Berrell. Link.
Horringer, St. Leonard. 155 TL 825 620. © Dave Westrap. Link1. Link2. Link3.

Icklingham, St. James.  Thanks go to Rik Powell for identifying Jim Huling's photo which was previously in the "Unknown" section. It was suspected to be in SE England or East Anglia, and so it proved to be. © Jim Huling. Link.
Ickworth, St. Mary, from an old postcard © Bulman Collection.
Iken, St. Botolph. From an old postcard in Christopher Skottowe's Collection. Link.
Ipswich.

Kersey, St. Mary. 155 TM 002 440. © Steve Bulman. Interior view. © Mike Berrell. Link.
Kessingland, St. Edmund. From an old postcard in Reg Dosell's Collection. Link.

Lavenham.
Layham - see Lower Layham.
Leiston, St. Margaret. 156 TM 439 625. © Judith Anderson.
Lindsey. St. James's Chapel. Interior view. Both © Mike Berrell. Link.
Linstead Parva, St. Margaret of Antioch. 156 TM 337 777. © Steve Bulman. Link.
Little Whelnetham, St. Mary Magdalene. 155 TL 889 601. © Steve Bulman. Link.
Long Melford, Holy Trinity. Another view. 155 TL 865 468. Both © Steve Bulman. An old postcard view (photo taken in or before 1903), from Dave Westrap's Collection. Note the different appearance of the tower, which was re-built in 1903. Another old postcard (franked 1907), this one showing the interior. This is one of those old metallic postcards, hence the poor image quality. From Steve Bulman's Collection. Link1. Link2. U.R.C. 155 TL 862 454. © Steve Bulman. St. Catherine. 155 TL 862 453. © Steve Bulman. Link.
Lower Layham, St. Andrew. Interior view. TM 031 403. Both © Mike Berrell. Link.

Mellis, St. Mary, and from an old postcard. © Jane Marriott.
Metfield, St. John the Baptist. 156 TM 294 804. Methodist Church. 156 TM 294 805. Both © Steve Bulman. Link.
Middleton, Holy Trinity. 156 TM 430 678. © Steve Bulman.
Mildenhall, St. Mary, and one of the windows. Both © James Huling.
Monks Eleigh, St. Peter. 155 TL 966 478. © Steve Bulman. Link.
Moulton, St. Peter. © Elizabeth Orbell. Link.

Naughton, St. Mary. Interior view. TM 022 490. Both © Mike Berrell. Link.
Nedging, St. Mary. Interior view. TL 998 482. Both © Mike Berrell. Link.
Needham Market, St. John the Baptist - of rather unconventional appearance, but has a splendid interior (see the link). © Chris Emms (2009). Link.
Newmarket, St. Mary. From an old postcard, Bulman Collection. Link. All Saints. Compare with Link1, which shows that the tower pinnacles were removed at some point. From Reg Dosell's postcard collection. Link1. Link2.

Orford, St. Bartholomew. 156 TM 423 500. Link. Methodist Church. Both © Steve Bulman.
Oulton, St. Michael. From an old postcard in Steve Bulman's Collection (franked, 1907?). Link.

Raydon, St. Mary. 155 TM 049 386. © Steve Bulman. Link.
Reydon,  St. Margaret. From an old postcard in Geoff Watt's Collection. Previously in the "Unknown" section, this postcard is allegedly of Raydon Church. However, I'd been to Raydon Church, and it looked nothing like the postcard, nor could I find another Raydon. Doubting my own sanity for a moment, I did manage to find photos on the wider web, which confirmed that I had indeed been to Raydon (relief!!). Thanks to Janet Gimber for the correct identification - this is yet another example of a wrongly named postcard. Link.

Saxmundham, Suffolk, St. John the Baptist. © Mark Turbott. Another view. © Steve Bulman. 156 TM 389 630. Link.
Semer, All Saints. Interior view. TL 999 468. Both © Mike Berrell.
Shelley, All Saints. Interior view. TM 030 384. Both © Mike Berrell. Link.
Snape, St. John the Baptist. 156 TM 394 594. © Steve Bulman. Link.
Southwold.
Sternfield, St. Mary Magdalene. 156 TM 391 616. © Steve Bulman. Link.
Stoke-by-Nayland, St. Mary. 155 TL 986 363. © Steve Bulman. Link.
Stonham Aspal, the very unusual St. Mary and St. Lambert. From an old postcard in Reg Dosell's Collection. Link.
Stowmarket, St. Peter and St. Mary. © Chris Emms (2009). Link.
Stratford St. Mary, St. Mary. From an old postcard, Bulman Collection. Link.
Sudbourne, All Saints. 156 TM 421 520. © Steve Bulman. Link.
Sudbury, the former St. Peter, now in the care of the Churches Conservation Trust. 155 TL 874 413. From an old postcard (franked 1907) in Dave Westrap's Collection. Link1. Link2. Link3.

Theberton, St. Peter. 156 TM 437 660. © Judith Anderson.
Thorpe Morieux, St. Mary. From an old postcard in Reg Dosell's Collection. Link.
Tuddenham, St. Martin. From an old postcard, (written on, but not franked, 12 Oct. 1917), Bulman Collection. Link.
Tunstall, St. John the Baptist. 156 TM 363 552. © Steve Bulman. An old postcard view, from Reg Dosell's Collection. Link.

Walberswick, St. Andrew. From an old postcard, Bulman Collection. A modern photo. © Judith Anderson. The former Methodist Chapel, now residential. © Steve Bulman.
Westleton, St. Peter. 156 TM 440 691. © Steve Bulman. Link.
Whatfield, St. Margaret. Interior view. TM 025 466. Salvation Army Meeting Hall. TM 026 467. Whatfield Chapel, (U.R.C., formerly Congregational). Interior view. Most of the building is a private residence, the chapel occupying a room at the rear. Used only 4 times a year. TM 023 464. All © Mike Berrell.
Whepstead, St. Petronilla. © Roger Heap.
Wickhambrook, All Saints. From an old postcard in Reg Dosell's Collection. Link.
Withersdale, St. Mary Magdalene. 156 TM 284 808. © Steve Bulman.
Woodbridge, St. Mary. From an old postcard, Geoff Watt's Collection. Link.

Yaxley, St. Mary. © Jane Marriott.
Yoxford, St. Peter. © Chris Emms (1995). Another view. © Steve Bulman. 156 TM 393 690. Link. Janet Gimber has managed to discover that this building is a former Methodist Chapel, and is now a B & B. © Steve Bulman. Link.