Ladik is a Czech Republic-based manufacturer of Eurorack-format modular synthesizer modules, run as a small one-person operation that handles design and production directly. The brand has built a catalog of affordable utility and performance modules covering sequencers, envelope generators, LFOs, mixers, VCAs, filters, MIDI interfaces, clock dividers, quantizers, and CV/gate processors, with module names organized by letter-prefix series (S- for sequencers, C- for envelopes/controllers, L- for LFOs, M- for mixers, Q- for quantizers, U- for utility, A- for amplifiers, and so on).

Within the modular community Ladik is often described as the Czech counterpart to Doepfer, valued for the breadth of its lineup and low pricing rather than flashy marketing. Notable modules cited by users and synth blogs include the S-180 8-step sequencer, the S-316 16-step sequencer, the Q-010 Easy Quantizer, and the S-090 Dual Probability Skipper. Ladik has also produced a Eurorack-format clone of the Star Instruments Synare 3 'UFO' drum synth.

The brand operates with minimal promotion — there are no official product videos or marketing campaigns — and new modules are typically announced directly on the ladik.eu website, with distribution through the site itself and resellers including Reverb shops and various European modular retailers.

Ladik has 10 products cataloged on Equipboard, including Modular Synthesizers and Drum Machines. Their gear is featured by 1 artist, with the strongest followings in Electronic. Notable users include Richard Devine.