The men's decathlon was a track and field athletics event held as part of the athletics at the 1912 Summer Olympics programme. The competition was held from Saturday, July 13, 1912, to Monday, July 15, 1912. It was the first time the decathlon, which had been introduced in 1911, was held at the Olympics; a different ten-event competition, the all-around, had been contested in St. Louis in 1904. Twenty-nine decathletes from twelve nations competed. NOCs could enter up to 12 athletes.Official report, p. 61.

Results Jim Thorpe's gold medal was stripped by the International Olympic Committee in 1913, after the IOC learned that Thorpe had taken expense money for playing baseball, violating contemporary Olympic amateurism rules, before the 1912 Games. This moved everyone else up in the rankings. In 1982, the IOC was convinced that the disqualification had been improper, as no protest against Thorpe's eligibility had been brought within the required 30 days, and reinstated Thorpe's medals. This made Thorpe and Hugo Wieslander co-champions. In 2022, the IOC decided to display Thorpe as the sole gold medal winner after the Swedish Olympic Committee and Wieslander's surviving family members declared Thorpe should be acknowledged as the sole Olympic champion.

Avery Brundage, president of the IOC from 1952 to 1972, competed in the decathlon finishing in 16th place. Brundage did not start in the last two events of the competition.

100 metres

Event 1 Place Athlete Time Score 1 11.0 952.4 11.0 952.4 3 11.2 904.8 11.2 904.8 5 11.3 881.0 11.3 881.0 7 11.4 857.2 8 11.5 833.4 11.5 833.4 10 11.6 809.6 11.6 809.6 12 11.7 785.8 13 11.8 762.0 11.8 762.0 11.8 762.0 16 12.0 714.4 12.0 714.4 18 12.1 690.6 12.1 690.6 20 12.2 666.8 12.2 666.8 22 12.3 643.0 12.3 643.0 12.3 643.0 12.3 643.0 26 12.4 619.2 12.4 619.2 28 12.5 595.4 29 13.3 405.0

Long jump

| width="40%" align="left" valign="top" | Event 2 Place Athlete Distance Score 1 6.87 850.55 2 6.84 843.20 3 6.79 830.95 4 6.69 806.45 5 6.48 755.00 6 6.46 750.10 7 6.43 742.75 8 6.42 740.30 9 6.40 735.40 10 6.34 720.70 11 6.29 708.45 12 6.27 703.55 13 6.20 686.40 14 6.14 671.70 15 6.08 657.00 16 6.05 649.65 17 6.04 647.20 18 5.99 634.95 19 5.98 632.50 20 5.95 625.15 21 5.89 610.45 22 5.83 595.75 23 5.75 576.15 24 5.72 568.80 25 5.64 549.20 26 5.60 539.40 27 5.56 529.60 28 5.52 519.80 29 5.43 497.75 | width="60%" align="left" valign="top" | After 2 events Place Athlete 1 2 Total 1 952.4 843.20 1795.60 2 904.8 830.95 1735.75 3 952.4 750.10 1702.50 4 881.0 742.75 1623.75 5 762.0 850.55 1612.55 6 785.8 806.45 1592.25 7 904.8 671.70 1576.50 8 881.0 649.65 1530.65 9 809.6 708.45 1518.05 10 762.0 755.00 1517.00 11 762.0 740.30 1502.30 12 857.2 632.50 1489.70 13 833.4 625.15 1458.55 14 666.8 735.40 1402.20 833.4 568.80 1402.20 16 666.8 703.55 1370.35 17 809.6 539.40 1349.00 18 690.6 657.00 1347.60 19 619.2 720.70 1339.90 20 643.0 686.40 1329.40 21 714.4 610.45 1324.85 22 643.0 647.20 1290.20 23 643.0 634.95 1277.95 24 714.4 519.80 1234.20 25 690.6 529.60 1220.20 26 643.0 576.15 1219.15 27 619.2 595.75 1214.95 28 595.4 549.20 1144.60 29 405.0 497.75 902.75

Shot put

| width="40%" align="left" valign="top" | Event 3 Place Athlete Distance Score 1 12.89 809 2 12.83 803 3 12.79 799 4 12.14 734 5 11.67 687 6 11.50 670 7 11.29 649 8 11.12 632 11.12 632 10 11.09 629 11 11.05 625 12 10.98 618 13 10.69 589 14 10.54 574 15 10.30 550 16 10.20 540 17 10.16 536 18 10.08 528 19 9.98 518 20 9.90 510 21 9.86 506 22 9.81 501 23 9.76 496 24 9.67 487 9.67 487 26 9.35 455 27 9.29 449 28 8.48 368 29 8.23 343 | width="60%" align="left" valign="top" | After 3 events Place Athlete 1 2 3 Total 1 904.8 830.95 809 2544.75 2 762.0 850.55 687 2299.55 3 952.4 843.20 496 2291.60 4 762.0 740.30 734 2236.30 5 833.4 568.80 803 2205.20 6 952.4 750.10 455 2157.50 7 619.2 720.70 799 2138.90 8 785.8 806.45 540 2132.25 9 881.0 742.75 501 2124.75 10 857.2 632.50 618 2107.70 11 881.0 649.65 574 2104.65 12 833.4 625.15 629 2087.55 13 809.6 708.45 536 2054.05 14 666.8 735.40 632 2034.20 15 904.8 671.70 449 2025.50 16 762.0 755.00 487 2004.00 17 690.6 657.00 632 1979.60 18 643.0 647.20 670 1960.20 19 714.4 519.80 649 1883.20 20 643.0 634.95 589 1866.95 21 809.6 539.40 510 1859.00 22 643.0 686.40 518 1847.40 23 714.4 610.45 506 1830.85 24 643.0 576.15 528 1747.15 25 666.8 703.55 368 1738.35 26 619.2 595.75 487 1701.95 27 595.4 549.20 550 1694.60 28 690.6 529.60 343 1563.20 29 405.0 497.75 625 1527.75

High jump

6 of the 29 starters did not appear for the fourth event.

| width="40%" align="left" valign="top" | Event 4 Place Athlete Height Score 1 1.87 958 2 1.80 860 1.80 860 4 1.75 790 1.75 790 1.75 790 7 1.70 720 1.70 720 1.70 720 1.70 720 1.70 720 1.70 720 13 1.65 650 1.65 650 1.65 650 1.65 650 1.65 650 18 1.60 580 1.60 580 20 1.55 510 1.55 510 1.55 510 23 1.50 440 24 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 | width="60%" align="left" valign="top" | After 4 events Place Athlete 1 2 3 4 Total 1 904.8 830.95 809 958 3502.75 2 762.0 850.55 687 860 3159.55 3 762.0 740.30 734 790 3026.30 4 619.2 720.70 799 860 2998.90 5 952.4 843.20 496 650 2941.60 6 833.4 568.80 803 720 2925.20 7 881.0 742.75 501 720 2844.75 8 857.2 632.50 618 720 2827.70 9 904.8 671.70 449 790 2815.50 10 785.8 806.45 540 650 2782.25 11 666.8 735.40 632 720 2754.20 12 690.6 657.00 632 720 2699.60 13 833.4 625.15 629 580 2667.55 14 952.4 750.10 455 510 2667.50 15 762.0 755.00 487 650 2654.00 16 809.6 539.40 510 790 2649.00 17 643.0 686.40 518 650 2497.40 18 643.0 647.20 670 510 2470.20 19 666.8 703.55 368 720 2458.35 20 643.0 634.95 589 580 2446.95 21 619.2 595.75 487 650 2351.95 22 714.4 519.80 649 440 2323.20 23 643.0 576.15 528 510 2257.15 24 881.0 649.65 574 0 DNF 2104.65 25 809.6 708.45 536 0 DNF 2054.05 26 714.4 610.45 506 0 DNF 1830.85 27 595.4 549.20 550 0 DNF 1694.60 28 690.6 529.60 343 0 DNF 1563.20 29 405.0 497.75 625 0 DNF 1527.75

400 metres 5 more athletes, including the 6th-placed Nilsson, retired after the high jump and did not appear for the fifth event. This brought the number of non-finishers up to 11, leaving 18 to continue the competition.

| width="40%" align="left" valign="top" | Event 5 Place Athlete Time Score 1 49.9 943.60 2 51.6 879.68 3 52.1 860.88 4 52.2 857.12 5 52.3 853.36 6 53.2 819.52 53.2 819.52 8 53.6 804.48 9 54.2 781.92 10 54.5 770.64 11 54.6 766.88 12 55.0 751.84 13 55.2 744.32 14 55.7 725.52 15 56.1 710.48 16 56.7 687.92 17 58.2 631.52 18 59.0 601.44 — DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 | width="60%" align="left" valign="top" | After 5 events Place Athlete 1 2 3 4 5 Total 1 904.8 830.95 809 958 857.12 4359.87 2 762.0 850.55 687 860 751.84 3911.39 3 952.4 843.20 496 650 943.60 3885.20 4 762.0 740.30 734 790 804.48 3830.78 5 619.2 720.70 799 860 687.92 3686.82 6 904.8 671.70 449 790 860.88 3676.38 7 857.2 632.50 618 720 819.52 3647.22 8 785.8 806.45 540 650 819.52 3601.77 9 762.0 755.00 487 650 879.68 3533.68 10 833.4 625.15 629 580 853.36 3520.91 11 666.8 735.40 632 720 744.32 3498.52 12 690.6 657.00 632 720 781.92 3481.52 13 809.6 539.40 510 790 770.64 3419.64 14 643.0 686.40 518 650 725.52 3222.92 15 643.0 647.20 670 510 631.52 3101.72 16 619.2 595.75 487 650 710.48 3062.43 17 666.8 703.55 368 720 601.44 3059.79 18 643.0 576.15 528 510 766.88 3024.03 19 833.4 568.80 803 720 0 DNF 2925.20 20 881.0 742.75 501 720 0 DNF 2844.75 21 952.4 750.10 455 510 0 DNF 2667.50 22 643.0 634.95 589 580 0 DNF 2446.95 23 714.4 519.80 649 440 0 DNF 2323.20 24 881.0 649.65 574 0 0 DNF 2104.65 25 809.6 708.45 536 0 0 DNF 2054.05 26 714.4 610.45 506 0 0 DNF 1830.85 27 595.4 549.20 550 0 0 DNF 1694.60 28 690.6 529.60 343 0 0 DNF 1563.20 29 405.0 497.75 625 0 0 DNF 1527.75

Discus throw Philbrook scored over 1000 points in the event by breaking the previous Olympic record (listed as 41.46 metres in the 1912 official report, though actually only 40.89 set by Martin Sheridan in 1908). Since the discus throw event had been held 2 days prior to the decathlon and Armas Taipale had far exceeded the old record, Philbrook's mark was not a new record. It did vault him from 5th place to 2nd following the 6th event, however.

| width="40%" align="left" valign="top" | Event 6 Place Athlete Distance Score 1 41.56 1038.00This score is reported in the Official Report. According to the formula given earlier in the Report (1000 point base, plus .38 points for each .01 metres from 41.46), however, the score should have been 1003.80 points. 2 37.14 835.84 3 36.98 829.76 4 36.29 803.54 5 35.46 772.00 6 35.35 767.82 7 34.07 719.28Score as reported in the OR. The formula gives 719.18 points. 8 31.78 632.16 9 31.65 627.22 10 31.48 620.76 11 31.34 615.44 12 30.52 584.28 13 30.20 572.12 14 29.95 562.62 15 29.78 556.16 16 29.21 534.50 17 25.37 388.56Score as reported in the OR. The formula gives 388.58 points. 18 21.95 258.62 — DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 DNS 0 | width="60%" align="left" valign="top" | After 6 events Place Athlete 1 2 3 4 5 6 Total 1 904.8 830.95 809 958 857.12 829.76 5189.63 2 619.2 720.70 799 860 687.92 1038.00 4724.82 3 762.0 850.55 687 860 751.84 767.82 4679.21 4 762.0 740.30 734 790 804.48 803.54 4634.32 5 857.2 632.50 618 720 819.52 632.16 4279.38 6 904.8 671.70 449 790 860.88 584.28 4260.66 7 690.6 657.00 632 720 781.92 772.00 4253.52 8 785.8 806.45 540 650 819.52 627.22 4228.99 9 666.8 735.40 632 720 744.32 719.28 4217.80 10 952.4 843.20 496 650 943.60 258.62 4143.82 11 762.0 755.00 487 650 879.68 562.62 4096.30 12 833.4 625.15 629 580 853.36 556.16 4077.07 13 643.0 647.20 670 510 631.52 835.84 3937.56 14 643.0 686.40 518 650 725.52 620.76 3843.68 15 809.6 539.40 510 790 770.64 388.56 3808.20 16 643.0 576.15 528 510 766.88 615.44 3639.47 17 619.2 595.75 487 650 710.48 572.12 3634.55 18 666.8 703.55 368 720 601.44 534.50 3594.29 19 833.4 568.80 803 720 0 0 DNF 2925.20 20 881.0 742.75 501 720 0 0 DNF 2844.75 21 952.4 750.10 455 510 0 0 DNF 2667.50 22 643.0 634.95 589 580 0 0 DNF 2446.95 23 714.4 519.80 649 440 0 0 DNF 2323.20 24 881.0 649.65 574 0 0 0 DNF 2104.65 25 809.6 708.45 536 0 0 0 DNF 2054.05 26 714.4 610.45 506 0 0 0 DNF 1830.85 27 595.4 549.20 550 0 0 0 DNF 1694.60 28 690.6 529.60 343 0 0 0 DNF 1563.20 29 405.0 497.75 625 0 0 0 DNF 1527.75

110 metre hurdles

| width="40%" align="left" valign="top" | Event 7 Place Athlete Time Score 1 15.6 943.0 2 16.2 886.0 3 16.3 876.5 4 16.4 867.0 16.4 867.0 16.4 867.0 7 16.8 829.0 8 17.0 810.0 17.0 810.0 10 17.1 800.5 11 17.2 791.0 17.2 791.0 17.2 791.0 14 17.6 753.0 15 17.7 743.5 16 17.8 734.0 17 18.9 629.5 18 19.5 572.5 — DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 DNS 000.0 | width="60%" align="left" valign="top" |