structural motives for organosuperbases, that are easy to prepare and highly basic are urgently required in many areas of chemistry. The synthesis of N,N′‐bis(imidazolyl)guanidine bases (BIG bases) is reported. Their pKα values are determined as 26.1–29.3 in THF. They are thus probably the strongest known phosphorous‐free organic bases both in solution and in the gas phase. Calculations help to determine