A fiber coupler for coupling light into an optical fiber and/or coupling light out of the fiber, has two holder elements, namely a fiber holder for holding the fiber, and a lens holder for holding a focusing lens. The holder elements are adjustable in the axial and transversal direction, respectively. In order to make such a fiber coupler available, which allows precise adjustment of the position of the focusing lens relative to the fiber, and which is furthermore compact in structure and inexpensive to produce, the holder elements are connected with a base body by way of at least one elastic monolithic joint, in each instance.