The Monument to the X-ray and Radium Martyrs of All Nations (also known as the X-ray Martyrs' Memorial) is a memorial in Hamburg, Germany, commemorating those who died due to their work with the use of radiation, particularly X-rays, in medicine. It was unveiled on the grounds of St Georg (St George's) Hospital (now the '), on 4 April 1936 by the ' (the Röntgen Society of Germany).
When unveiled, the memorial included 169 names, from fifteen nations, listed alphabetically; by 1959 there were 359, with the additions listed on four separate stone plaques, beside the original columnar stone memorial.
The memorial's inscription may be translated as:
An accompanying book, ' (Book of Honour of radiologists of all nations) gives biographies of those commemorated. Three editions have been produced, the most recent in 1992.
The names of those commemorated include: