Infrared measurements of the Crab pulsar with the NASA IRTF 3.0 m telescope show that the spectrum of the main pulse turns downward for wavelengths longer than 3 microns. The 'shoulder' pulse discovered by Pennypacker (1981) is measured in the 0.9-2.4 microns region, but disappears at 3.5 microns. This pulse rise from 0 to 20 percent of the height of the main pulse within 1 to 2 ms after the main pulse peak and decays with a 4 to 5 ms time constant. Excess infrared flux also appears after the interpulse. The main peak itself may be narrower at 3.45 microns than in the optical to 2.2 microns band.