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We present the first LHAASO catalog of -ray sources with energies above 25 TeV. The catalog covers the northern -ray sky from declination −20 • to 80 • , and it is based on data collected by the LHAASO 1 km 2 array (LHAASO-KM2A) from January 2020 to September 2022. It represents the most sensitive survey of these sources in this energy range, including 75 detections with an extended size of less than 2 • . Among them, 43 sources have been detected with ultra-high energy (>100 TeV) emissions with a significance level higher than 4 (TS > 25). The position, extension and power-law spectral characteristics of each source are reported.