| canon de 47 mm SA mle 1937 | |
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47 SA 37 preserved at Worthington Tank Museum at CFB Borden (Ontario, Canada) |
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| Type | Anti-tank gun |
| Place of origin | France |
| Service history | |
| Used by | France Nazi Germany |
| Wars | World War II |
| Specifications | |
| Weight | 1,070 kg (2,359 lbs) |
| Barrel length | 50 |
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| Shell | 47x380 mm. R APCBC |
| Caliber | 47 millimetres (1.9 in) |
| Rate of fire | 15 to 20 rounds/min |
| Muzzle velocity | 855 m/s (2,805 ft/s) |
| Effective range | 2,000 m (2,187 yds) |
The 47 mm APX anti-tank gun was a French anti-tank gun that saw service in the first years of the Second World War.
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In the 1930s the French artillery sought a replacement for the derivatives of the 75 mm mle 1897 field gun it used in the anti-tank role. Despite having a decent anti-armour capability, the venerable soixante-quinze was heavy and was much harder to conceal than the smaller high-velocity, small calibre anti-tank weapons of modern design. The chosen weapon was a design of the state-owned arsenal Atelier de Puteaux ("Puteaux workshop", abbreviated to APX), and was designated as canon de 47 mm semi-automatique mle 1937. It was a very efficient weapon, especially given the (then) thin armour of German tanks of the time, unfortunately the 47 SA 37 still was relatively rare at the time of the Battle of France.
Examples captured by the German forces were operationally used under the designation 4.7cm Pak 181(f).