Competitors for 1978 World Cyclo-Cross Championships
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Philip Allison |  GBR |
CYC | |
| John Atkins | GBR |
CYC | 7 April 1942 |
| Franco Bitossi |  ITA |
CYC | 1 September 1940 |
| Gilles Blaser |  SUI |
CYC | 16 December 1952 |
| René Bleuze |  FRA |
CYC | 17 March 1944 |
| Peter Brookes | GBR |
CYC | |
| Marc De Block |  BEL |
CYC | 25 July 1945 |
| Paul De Brauwer | BEL |
CYC | 7 June 1956 |
| Paolo De Capitani | ITA |
CYC | 11 November 1954 |
| Roger De Vlaeminck | BEL |
CYC | 24 August 1947 |
| Norbert Dedeckere | BEL |
CYC | 23 November 1948 |
| Hilaire Desclos | FRA |
CYC | 13 October 1944 |
| Eric Desruelle | BEL |
CYC | 8 August 1941 |
| Vito Di Tano | ITA |
CYC | 23 September 1954 |
| Christopher Dodd | GBR |
CYC | 13 November 1951 |
| Miloš Fišera |  TCH |
CYC | 17 February 1950 |
| Peter Frischknecht | SUI |
CYC | 12 March 1946 |
| Alex Gérardin | FRA |
CYC | 8 July 1947 |
| Johan Ghyllebert | BEL |
CYC | 4 December 1955 |
| Roger Gilson |  LUX |
CYC | 19 September 1947 |
| Juan Gorostidi |  ESP |
CYC | 2 September 1945 |
| Rein Groenendaal |  NED |
CYC | 24 April 1951 |
| Keith Hanson | GBR |
CYC | 31 July 1952 |
| Karl-Heinz Helbling | SUI |
CYC | 20 October 1956 |
| Grzegorz Jaroszewski |  POL |
CYC | 12 February 1955 |
| Leif Jørgensen |  DEN |
CYC | |
| Jaroslav Komon | TCH |
CYC | 20 December 1953 |
| Carlo Lafranchi | SUI |
CYC | 17 September 1952 |
| Renato Laghi | ITA |
CYC | 8 December 1944 |
| Raymond Laures | LUX |
CYC | 10 April 1950 |
| Roland Liboton | BEL |
CYC | 6 March 1957 |
| Erwin Lienhard | SUI |
CYC | 16 January 1957 |
| Willi Lienhard | SUI |
CYC | 30 January 1954 |
| Andrzej Mąkowski | POL |
CYC | 3 June 1957 |
| Laurence Malone |  USA |
CYC | |
| José Antonio Martínez | ESP |
CYC | 9 September 1948 |
| Mariano Martinez | FRA |
CYC | 20 September 1948 |
| Luis Mazorriaga | ESP |
CYC | |
| Ramón Medina | ESP |
CYC | 29 March 1950 |
| Jan Miron | POL |
CYC | |
| Ueli Müller | SUI |
CYC | 3 April 1952 |
| Joaquim Ortega | ESP |
CYC | 23 April 1948 |
| Ottavio Paccagnella | ITA |
CYC | 6 January 1956 |
| Wladimiro Panizza | ITA |
CYC | 5 June 1945 |
| Rainer Paus |  GER |
CYC | |
| Jean-Yves Plaisance | FRA |
CYC | 26 December 1946 |
| Václav Pochop | TCH |
CYC | |
| Joseph Ryan | USA |
CYC | |
| Herman Snoeijink | NED |
CYC | 6 August 1951 |
| Martin Springer | GBR |
CYC | |
| Hendrikus Stamsnijder | NED |
CYC | 21 July 1954 |
| Hans Steekers | NED |
CYC | 8 May 1950 |
| Richard Steiner | SUI |
CYC | 12 November 1943 |
| Eric Stone | GBR |
CYC | 22 February 1946 |
| Ekkehard Teichreber | GER |
CYC | 8 April 1948 |
| Klaus-Peter Thaler | GER |
CYC | 14 May 1949 |
| Dieter Übing | GER |
CYC | 20 February 1946 |
| Franco Vagneur | ITA |
CYC | 14 February 1944 |
| Albert Van Damme | BEL |
CYC | 1 December 1940 |
| Robert Vermeire | BEL |
CYC | 2 November 1944 |
| Heinz Weis | GER |
CYC | |
| Cees van der Wereld | NED |
CYC | 12 December 1955 |
| Gertie Wildeboer | NED |
CYC | 3 April 1948 |
| André Wilhelm | FRA |
CYC | 7 February 1943 |
| José María Yurrebaso | ESP |
CYC | 11 October 1955 |
| Lucien Zeimes | LUX |
CYC | 30 October 1948 |
| Albert Zweifel | SUI |
CYC/TRI | 7 June 1949 |