 Australia
Royal Australian Air Force
No.
455 Squadron RAAF Used between July 1941 and December 1943, Codeletters UB.

 Canada
Royal Canadian Air Force
No.
408 (Goose) Squadron RCAF Used with RAF Bomber Command between July 1941 and September 1942, Codeletters EQ
No.
415 (Swordfish) Squadron RCAF Used as a torpedo bomber with RAF Coastal Command between February 1942 and November 1943, Codeletters GX
No.
420 (Snowy Owl) Squadron RCAF Used with RAF Bomber Command between December 1941 and August 1942, Codeletters PT
No.
32 Operational Training Unit RAF/RCAF Used in Canada between May 1942 and February 1944, Codeletters DK, LB, OP and RO
 New Zealand
Royal New Zealand Air Force
No.
489 Squadron RNZAF Used between February 1942 and November 1943, Codeletters XA
 Soviet Union
Soviet Naval Aviation
24th Mine-Torpedo Aviation Regiment (24 MTAP)
 Sweden
Swedish Air Force
Reconnaissance Wing F 11 based at Nyköping operated a single HP.52 for evaluation under designation P 5.
After the war, the aircraft was sold to SAAB where it was operated for testing avionics.

 United Kingdom
Royal Air Force
No.
7 Squadron RAF  – April 1939 to April 1940, code letters LT (pre-war) and MG (wartime)
No.
44 Squadron RAF – February 1939 and December 1941, code letters JW (pre-war) and KM (wartime)
No.
49 Squadron RAF – October 1938 and April 1942, code letters XU (pre-war) and EA (wartime)
No.
50 Squadron RAF – December 1938 and April 1942, code letters QX (pre-war) and VN (wartime)
No.
61 Squadron RAF – February 1939 and October 1941, code letters LS (pre-war) and QR (wartime)
No.
76 Squadron RAF – March 1939 and April 1940, code letters NM (pre-war) and MP (wartime)
No.
83 Squadron RAF – November 1938 and January 1942, code letters QQ (pre-war) and OL (wartime)
No.
97 Squadron RAF – July/August 1941, squadron code OF
No.
106 Squadron RAF – March 1939 to March 1942, code letters XS (pre-war) and ZN (wartime)
No.
144 Squadron RAF – March 1939 to October 1942, code letters NV (pre-war) and PL (wartime)
No.
185 Squadron RAF – June 1939 to April 1940, code letters ZM (pre-war) and GL (wartime)
No.
207 Squadron RAF – July/August 1941, squadron code EM
No.
517 Squadron RAF – August to November 1943,
No.
519 Squadron RAF – August to November 1943, code letters Z9
No.
521 Squadron RAF – September to December 1943, code letters 5O
No.
5 (C)OTU RAF Used between July 1942 and September 1943, Only individual code letters and numbers
No.
14 Operational Training Unit RAF Used between 5 May 1940 and December 1942, code letters AM, GL and VB
No.
16 Operational Training Unit RAF Used between 18 April 1940 and September 1942, code letters GA, JS and XG
No.
25 Operational Training Unit RAF Used between February and December 1941, code letters ZP
No.
1401 (Meteorological) Flight RAF at RAF Bircham Newton/RAF Docking
No.
1402 (Meteorological) Flight RAF at Aldergrove
No.
1403 (Meteorological) Flight RAF at Gosport/Bircham Newton/Gibraltar
No.
1404 (Meteorological) Flight RAF at St. Eval
No.
1406 (Meteorological) Flight RAF at Wick
No.
1407 (Meteorological) Flight RAF at Reykjavik
 Australia
Royal Australian Air Force
No. 455 Squadron RAAF Used between July 1941 and December 1943, Codeletters UB.
 Canada
Royal Canadian Air Force
No. 408 (Goose) Squadron RCAF Used with RAF Bomber Command between July 1941 and September 1942, Codeletters EQ
No. 415 (Swordfish) Squadron RCAF Used as a torpedo bomber with RAF Coastal Command between February 1942 and November 1943, Codeletters GX
No. 420 (Snowy Owl) Squadron RCAF Used with RAF Bomber Command between December 1941 and August 1942, Codeletters PT
No. 32 Operational Training Unit RAF/RCAF Used in Canada between May 1942 and February 1944, Codeletters DK, LB, OP and RO
 New Zealand
Royal New Zealand Air Force
No. 489 Squadron RNZAF Used between February 1942 and November 1943, Codeletters XA
 Soviet Union
Soviet Naval Aviation
24th Mine-Torpedo Aviation Regiment (24 MTAP)
 Sweden
Swedish Air Force
Reconnaissance Wing F 11 based at Nyköping operated a single HP.52 for evaluation under designation P 5. After the war, the aircraft was sold to SAAB where it was operated for testing avionics.
 United Kingdom
Royal Air Force
No. 7 Squadron RAF  – April 1939 to April 1940, code letters LT (pre-war) and MG (wartime)
No. 44 Squadron RAF – February 1939 and December 1941, code letters JW (pre-war) and KM (wartime)
No. 49 Squadron RAF – October 1938 and April 1942, code letters XU (pre-war) and EA (wartime)
No. 50 Squadron RAF – December 1938 and April 1942, code letters QX (pre-war) and VN (wartime)
No. 61 Squadron RAF – February 1939 and October 1941, code letters LS (pre-war) and QR (wartime)
No. 76 Squadron RAF – March 1939 and April 1940, code letters NM (pre-war) and MP (wartime)
No. 83 Squadron RAF – November 1938 and January 1942, code letters QQ (pre-war) and OL (wartime)
No. 97 Squadron RAF – July/August 1941, squadron code OF
No. 106 Squadron RAF – March 1939 to March 1942, code letters XS (pre-war) and ZN (wartime)
No. 144 Squadron RAF – March 1939 to October 1942, code letters NV (pre-war) and PL (wartime)
No. 185 Squadron RAF – June 1939 to April 1940, code letters ZM (pre-war) and GL (wartime)
No. 207 Squadron RAF – July/August 1941, squadron code EM
No. 517 Squadron RAF – August to November 1943,
No. 519 Squadron RAF – August to November 1943, code letters Z9
No. 521 Squadron RAF – September to December 1943, code letters 5O
No. 5 (C)OTU RAF Used between July 1942 and September 1943, Only individual code letters and numbers
No. 14 Operational Training Unit RAF Used between 5 May 1940 and December 1942, code letters AM, GL and VB
No. 16 Operational Training Unit RAF Used between 18 April 1940 and September 1942, code letters GA, JS and XG
No. 25 Operational Training Unit RAF Used between February and December 1941, code letters ZP
No. 1401 (Meteorological) Flight RAF at RAF Bircham Newton/RAF Docking
No. 1402 (Meteorological) Flight RAF at Aldergrove
No. 1403 (Meteorological) Flight RAF at Gosport/Bircham Newton/Gibraltar
No. 1404 (Meteorological) Flight RAF at St. Eval
No. 1406 (Meteorological) Flight RAF at Wick
No. 1407 (Meteorological) Flight RAF at Reykjavik
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