A dielectric filter unit, comprising: three or more dielectric blocks (100, 200, 300) including a first dielectric block and a second dielectric block, the three or more dielectric blocks being arranged in a predetermined direction; and a substrate having an input line, an output line, and a skip connecting line, wherein: each of the three or more dielectric blocks (100, 200, 300) includes a dielectric base and a conductive layer located on each face of the respective dielectric base, the three or more dielectric blocks (100, 200, 300) include at least a third dielectric block between the first dielectric block and the second dielectric block, and each of the three or more dielectric blocks (100, 200, 300) is electromagnetically coupled to one or two adjacent dielectric blocks included in the three or more dielectric blocks (100, 200, 300) through an opening in the conductive layer, the first dielectric block includes a first conductive layer having a first opening through which an input signal passes, the input line being partially electromagnetically coupled to the first dielectric block through the first opening, the second dielectric block includes a second conductive layer having a second opening, through which an output signal passes, the output line being partially electromagnetically coupled to the second dielectric block through the second opening, the third dielectric block includes a third conductive layer having a third opening, each of the three or more dielectric blocks (100, 200, 300) is configured to receive a signal and to resonate with a predetermined resonance characteristic, and characterized in that each of the three or more dielectric blocks (100, 200, 300) includes a first face (104, 204, 304) facing the substrate, the first opening and the second opening are located on the first faces (104, 204) of the respective dielectric blocks (100, 200), and the skip connecting line has a portion which faces the first opening and is electromagnetically coupled to the first dielectric block through the first opening, has a portion which faces the second opening and is electromagnetically coupled to the second dielectric block through the second opening, and is located away from the third opening. three or more dielectric blocks (100, 200, 300) including a first dielectric block and a second dielectric block, the three or more dielectric blocks being arranged in a predetermined direction; and a substrate having an input line, an output line, and a skip connecting line, wherein: each of the three or more dielectric blocks (100, 200, 300) includes a dielectric base and a conductive layer located on each face of the respective dielectric base, the three or more dielectric blocks (100, 200, 300) include at least a third dielectric block between the first dielectric block and the second dielectric block, and each of the three or more dielectric blocks (100, 200, 300) is electromagnetically coupled to one or two adjacent dielectric blocks included in the three or more dielectric blocks (100, 200, 300) through an opening in the conductive layer, each of the three or more dielectric blocks (100, 200, 300) includes a dielectric base and a conductive layer located on each face of the respective dielectric base, the three or more dielectric blocks (100, 200, 300) include at least a third dielectric block between the first dielectric block and the second dielectric block, and each of the three or more dielectric blocks (100, 200, 300) is electromagnetically coupled to one or two adjacent dielectric blocks included in the three or more dielectric blocks (100, 200, 300) through an opening in the conductive layer, the first dielectric block includes a first conductive layer having a first opening through which an input signal passes, the input line being partially electromagnetically coupled to the first dielectric block through the first opening, the second dielectric block includes a second conductive layer having a second opening, through which an output signal passes, the output line being partially electromagnetically coupled to the second dielectric block through the second opening, the third dielectric block includes a third conductive layer having a third opening, each of the three or more dielectric blocks (100, 200, 300) is configured to receive a signal and to resonate with a predetermined resonance characteristic, and characterized in that each of the three or more dielectric blocks (100, 200, 300) includes a first face (104, 204, 304) facing the substrate, the first opening and the second opening are located on the first faces (104, 204) of the respective dielectric blocks (100, 200), and the skip connecting line has a portion which faces the first opening and is electromagnetically coupled to the first dielectric block through the first opening, has a portion which faces the second opening and is electromagnetically coupled to the second dielectric block through the second opening, and is located away from the third opening.