| William Forster | DD9SDJK8XR | topic | open | Wikipedia William Forster (mathematician), Wikidata Q18593573 |
| William Francis Gray Swann | VV3YW0ZZGJ | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#70W0 |
| William Francis Pohl | K1NWQ3B92W | topic | open | Wikipedia William Francis Pohl, Wikidata Q28873106 |
| William Frederick Eberlein | WEQ5DB8ZVT | topic | open | Wikipedia William Frederick Eberlein, Wikidata Q2578876 |
| William Frederick Gerhardt | MGNYNF73TY | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#XQJZ |
| William French Smith | 94575XTJTP | unknown | open | Wikipedia List of University of California, Los Angeles people#UK9E |
| William Fulton | CDX96X6D4D | topic | open | Wikipedia List of people by Erdős number#I1W9, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#DEVV |
| William Fulton | E6GK8XD8MJ | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q2061291, nLab William Fulton, Wikipedia William Fulton (mathematician) |
| William G. Bade | 7KWXNFMJ1J | topic | open | Wikipedia William G. Bade, Wikidata Q19872957 |
| William G. Dwyer | V3ZMWX2W4N | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#EC3C |
| William G. McCallum | AZNMHHKBJ3 | topic | open | Wikipedia William G. McCallum, Wikidata Q16187197 |
| William G. McCallum | T5D37AFYNA | topic | open | Wikipedia List of people by Erdős number#Y2KX |
| William G. Unruh | 438ZSRG4JH | unknown | open | Wikipedia List of people by Erdős number#CDT6 |
| William G. Unruh | 474YG7FPP2 | unknown | open | Wikipedia List of contributors to general relativity#LTAE |
| William Galbraith | W3J94PQJZR | topic | open | Wikipedia William Galbraith (mathematician), Wikidata Q8009632 |
| William Gardiner | AQHT8SXBJ4 | topic | open | Wikipedia William Gardiner (mathematician), Wikidata Q18945828 |
| William Gasarch | CVQHCQ9BD7 | topic | open | Wikipedia William Gasarch, Wikidata Q21825565 |
| William Gehrlein | 3JFH2HX7G1 | unknown | open | Wikipedia List of people by Erdős number#M1XX |
| William Gelbart | 9Y60ENKAMS | unknown | open | Wikipedia List of University of California, Los Angeles people#6IPK |
| William Gemmell Cochran | 7RFNP3GSW4 | topic | open | Wikipedia List of people by Erdős number#D1WO, Wikipedia List of fellows of the American Statistical Association#2IBP |
| William Gemmell Cochran | BBPPAARYTT | topic | open | Wikipedia List of presidents of the Institute of Mathematical Statistics#SBLL |
| William Gemmell Cochran | H81VMR5ZSV | topic | open | Wikipedia William Gemmell Cochran, Wikidata Q880924 |
| William Gentle | DNK5JE1BAH | topic | open | Wikipedia William Gentle (headmaster), Wikidata Q25172149 |
| William George Carr | JA240Z5TAJ | unknown | open | Wikipedia List of University of California, Los Angeles people#WKL6 |
| William George Horner | G404FVFR8R | topic | open | Wikipedia William George Horner, Wikidata Q441228 |
| William George Spencer | S31ZEMMZ1F | topic | open | Wikipedia William George Spencer, Wikidata Q16859119 |
| William Gerard Dwyer | NTZ8BE4RJB | topic | open | Wikipedia William Gerard Dwyer, Wikidata Q24254227 |
| William Goldman | XH8R40RAYC | topic | open | Wikipedia List of people by Erdős number#USLK, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#TVEY |
| William Goldman | Y8J4ZHTYBS | topic | open | Wikipedia William Goldman (mathematician), Wikidata Q3893494 |
| William Guy | HKFQA6KE6T | topic | open | Wikipedia William Guy, Wikidata Q370144 |
| William H. Bossert | WREX4PB0HZ | topic | open | Wikipedia William H. Bossert, Wikidata Q102078634 |
| William H. Press | 1PFAVKQRN4 | unknown | open | Wikipedia List of people by Erdős number#CS6N |
| William H. Press | ASX0JZYWHR | unknown | open | Wikipedia List of contributors to general relativity#M5XA |
| William H. Spaulding | WDRKBX1SH5 | unknown | open | Wikipedia List of University of California, Los Angeles people#AJIU |
| William H. Tucker | GQ27TX4F3E | topic | open | Wikipedia William H. Tucker (psychologist), Wikidata Q8010628 |
| William Haboush | 64215NACK5 | topic | open | Wikipedia William Haboush, Wikidata Q3568676 |
| William Hamilton Martin and Bernon F. Mitchell | SE6FDG36AT | unknown | open | Wikipedia List of cryptographers#9D60 |
| William Hamilton Meeks, III | 64HWR4111Q | topic | open | Wikipedia William Hamilton Meeks, III, Wikidata Q15454708 |
| William Hamilton Meeks, III | P3KQ8RJWVJ | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#EKN0 |
| William Henry Roever | 8DJDEJ2S4Y | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#0EAH |
| William Henry Roever | JC0HXZ2HRY | topic | open | Wikipedia William Henry Roever, Wikidata Q47485061 |
| William Henry Young | WA0Q6815RT | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#16PR, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#5D3U, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#KZXL, Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#NHO8 |
| William Herrick Macaulay | JQDEVB92Y9 | topic | open | Wikipedia William Herrick Macaulay, Wikidata Q11108120 |
| William Hovgaard | W4CVK9S77R | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#FJQW |
| William Hunter | PQMVTVFQGJ | topic | open | Wikipedia William Hunter (statistician), Wikidata Q15485464 |
| William Hunter McCrea | Y8E5VR833J | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#RZHW |
| William J. Cook | CJH03YEZKD | topic | open | Wikipedia List of people by Erdős number#AK8X |
| William J. Cook | V92FP4K4ZJ | topic | open | Wikipedia William J. Cook, Wikidata Q2578302 |
| William J. Ellison | D69XASVTKC | topic | open | Wikipedia William J. Ellison, Wikidata Q1789183 |
| William J. Firey | 77ZV0M8FGX | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#DOKF |
| William J. Firey | 85QTCTV3FR | topic | open | Wikipedia William J. Firey, Wikidata Q55825345 |
| William J. LeVeque | 75FK85TQNG | topic | open | Wikipedia List of people by Erdős number#952G |
| William J. LeVeque | H25B3CW9TX | topic | open | Wikipedia William J. LeVeque, Wikidata Q2579699 |
| William J. Youden | 7FNDH0X6DD | unknown | open | Wikipedia List of fellows of the American Statistical Association#N1M1 |
| William Jack | 3F2797ZVRW | topic | open | Wikipedia William Jack (mathematician), Wikidata Q28133025 |
| William Jackson Humphreys | WVGQ11AG1B | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#UEK4 |
| William Jaco | 6R7R1THN6P | topic | open | Wikipedia List of people by Erdős number#YEVP |
| William Jaco | D4ZR5FQK1E | topic | open | Wikipedia William Jaco, Wikidata Q5308032 |
| William James Macdonald | QD8KZJP0X8 | topic | open | Wikipedia William James Macdonald, Wikidata Q37735641 |
| William James Sidis | DKVBV3WB3D | topic | open | Wikipedia William James Sidis, Wikidata Q313603 |
| William John Greenstreet | YW0ZYX3K1K | topic | open | Wikipedia William John Greenstreet, Wikidata Q18911694 |
| William Jones | 5CV73E4V93 | topic | open | Wikipedia William Jones (mathematician), Wikidata Q371877 |
| William K. Allard | CC484N3D4M | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#LM5T |
| William Kahan | 6AGFE1H1A5 | topic | open | Wikipedia List of Jewish mathematicians#8XA0 |
| William Kahan | PC4KCN3MQP | topic | open | Wikipedia William Kahan, Wikidata Q92782 |
| William Kantor | 21Q3Q9EMJW | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#W5UJ |
| William Kantor | MHQ326CFMT | topic | open | Wikipedia William Kantor, Wikidata Q15446993 |
| William Karush | K0SZXYYVP9 | topic | open | Wikipedia William Karush, Wikidata Q4216313 |
| William Kaye Estes | S91ADM1GWZ | topic | open | Wikipedia William Kaye Estes, Wikidata Q1780288 |
| William Kingdon Clifford | 15QT0TDWW7 | topic | open | Wikipedia List of complex analysis topics#E24F, Wikipedia List of algebraic geometry topics#GXDS |
| William Kingdon Clifford | BB969Y07K9 | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q323228, ProofWiki Mathematician:William_Kingdon_Clifford, Wikipedia William Kingdon Clifford |
| William Kingdon Clifford | YQJ8QY0RXZ | topic | open | Wikipedia List of geometers#ZI8O |
| William Kneale | JXCZPTC9GY | topic | open | Wikipedia William Kneale, Wikidata Q994761 |
| William Kruskal | 59E1FK98TG | topic | open | Wikipedia List of Jewish mathematicians#Y7WS |
| William Kruskal | RFQFNJ7AM4 | topic | open | Wikipedia List of fellows of the American Statistical Association#CRUI |
| William Kruskal | V5ND5JKPEQ | topic | open | Wikipedia William Kruskal, Wikidata Q1398917 |
| William Kruskal | WJCD71DAZY | topic | open | Wikipedia List of presidents of the Institute of Mathematical Statistics#QN44 |
| William L. Burke | XKQ6KFVE3W | unknown | open | Wikipedia List of contributors to general relativity#A5YG |
| William Lawrence Kocay | BVXA06NBM5 | unknown | open | Wikipedia List of people by Erdős number#PYDB |
| William Lawvere | 5HXJ1WKAH6 | topic | out_of_scope (a person, not an item of mathematics) | Wikidata Q290932, nLab William Lawvere, Wikipedia William Lawvere |
| William Lawvere | QS42Q4KKHY | topic | open | Wikipedia List of people by Erdős number#V9AH |
| William Lax | X02SKQ1JP9 | topic | open | Wikipedia William Lax, Wikidata Q8014371 |
| William Leybourn | WRRSX8XDPD | topic | open | Wikipedia William Leybourn, Wikidata Q8014557 |
| William Lionheart | 9F10DYKECR | topic | open | Wikipedia William Lionheart, Wikidata Q72191112 |
| William Lloyd Garrison Williams | AQ9DN4M9T0 | topic | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#1FZ5 |
| William Lloyd Garrison Williams | N5RJAXPXR1 | topic | open | Wikipedia William Lloyd Garrison Williams, Wikidata Q37738828 |
| William Lowell Putnam Mathematical Competition | 30DSCH6GW9 | definition | open | Wikipedia List of mathematics competitions#DTXT |
| William Lowell Putnam Mathematical Competition | VA48EG8C6V | definition | open | Wikipedia List of mathematics competitions#KO1C |
| William Ludlam | H6ENYRVN3Z | topic | open | Wikipedia William Ludlam, Wikidata Q8014775 |
| William M. Boothby | HXZ1HW11RD | topic | open | Wikipedia William M. Boothby, Wikidata Q102132257 |
| William M. Haenszel | YKKTKN2PR8 | unknown | open | Wikipedia List of fellows of the American Statistical Association#ZLXB |
| William Makeham | EA761RHX7Y | topic | open | Wikipedia William Makeham, Wikidata Q10393710 |
| William Marrat | KY57BDQTKQ | topic | open | Wikipedia William Marrat, Wikidata Q15994618 |
| William Martin Boyce | FX15BC47BQ | topic | open | Wikipedia William Martin Boyce, Wikidata Q102128796 |
| William McCrea | M25E2HS2JE | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q1385648, ProofWiki Mathematician:William_Hunter_McCrea |
| William McFadden Orr | 5044B3Y1N8 | topic | open | Wikipedia William McFadden Orr, Wikidata Q8015396 |
| William Menasco | 1X6PME812K | topic | open | Wikipedia William Menasco, Wikidata Q8015557 |
| William Messing | 3M936SF3EF | unknown | out_of_scope (a person, not an item of mathematics) | Wikidata Q2579982, nLab William Messing |
| William Minicozzi II | ZRSECX0XWX | unknown | open | Wikipedia List of International Congresses of Mathematicians Plenary and Invited Speakers#87L1 |
| William Mitchinson Hicks | N9H5AS8MVW | topic | open | Wikipedia William Mitchinson Hicks, Wikidata Q8015694 |